chore: Adding config validation

.github/CONTRIBUTING.md

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+### Submitting Pull Requests
+
+We'd love for you to contribute to our source code and to make this package even better than it is
+today! Here are the guidelines we'd like you to follow:
+
+ - [Issues and Bugs](#issue)
+ - [Feature Requests](#feature)
+ - [Coding Rules](#rules)
+ - [Commit Message Guidelines](#commit)
+
+## <a name="issue"></a> Found an Issue?
+
+If you find a bug in the source code or a mistake in the documentation, you can help us by
+submitting an issue to our [GitHub Repository][github]. Even better you can submit a Pull Request
+with a fix. But first search if the issue is already described!
+
+If not create a new issue:
+
+* Tell about your environment:
+  * java version
+  * used platform and version
+* Describe your issue
+  * describe your steps leading to the issue
+  * attach error logs or screenshots
+  * if possible provide test case or screenshots
+
+## <a name="feature"></a> Want a Feature?
+
+You can request a new feature by submitting an issue to our [GitHub Repository][github].
+
+Please follow these basic steps to simplify pull request reviews - if you don't you'll probably just be asked to anyway.**
+
+* Please rebase your branch against the current develop, use the **develop** for pull requests
+* Please ensure that the test suite passes **and** that code is lint free before submitting a PR by running:
+ * ```./mvnw test```
+* If you've added new functionality, **please** include tests which validate its behaviour
+* Make reference to possible [issues](https://github.com/ContinuousSecurityTooling/renovate-config/issues) on PR comment
+
+## <a name="rules"></a> Coding Rules
+
+To ensure consistency throughout the source code, keep these rules in mind as you are working:
+
+* All features or bug fixes **must be tested** by one or more [specs][unit-testing].
+* All public API methods **must be documented** with jsdoc.
+
+## <a name="commit"></a> Git Commit Guidelines
+
+We're using [Angular Commit Guidelines](https://github.com/angular/angular.js/blob/master/CONTRIBUTING.md#-git-commit-guidelines)

.github/FUNDING.yml

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+# These are supported funding model platforms
+open_collective: m13t
+github: ContinuousSecurityTooling

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+> ℹ Please fill out this template when filing an issue.
+> All lines beginning with an ℹ symbol instruct you with what info we expect. You can delete those lines once you've filled in the info.
+>
+> Per our [*CONTRIBUTING guidelines](https://github.com/ContinuousSecurityTooling/renovate-config/CONTRIBUTING.md), we use GitHub for
+> bugs and feature requests, not general support. Other issues should be opened on Stack Overflow with the tag `angular`.
+>
+> Please remove this line and everything above it before submitting.
+
+* [ ] I've read, understood, and done my best to follow the [*CONTRIBUTING guidelines](https://github.com/ContinuousSecurityTooling/renovate-config/CONTRIBUTING.md).
+
+## What did you do?
+
+ℹ Please replace this with what you did.  
+
+## What did you expect to happen?
+
+ℹ Please replace this with what you expected to happen.  
+
+## What happened instead?
+
+ℹ Please replace this with of what happened instead.  
+
+## Your Environment
+
+**Java version:**
+
+## Demo Project
+
+ℹ Please link to or upload a project we can download that reproduces the issue.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+## Prerequisites
+
+Please answer the following questions for yourself before submitting an issue.
+
+* [ ] I've read, understood, and done my best to follow the [*CONTRIBUTING guidelines](https://github.com/ContinuousSecurityTooling/renovate-config/CONTRIBUTING.md).
+
+## Changes
+
+**Is your feature request related to a problem? Please describe.**
+<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+**Describe the solution you'd like**
+<!-- A clear and concise description of what you want to happen. -->
+
+**Describe alternatives you've considered**
+<!-- A clear and concise description of any alternative solutions or features you've considered. -->
+
+**Additional context**
+<!-- Add any other context or screenshots about the feature request here. -->

.github/PULL_REQUEST_TEMPLATE.md

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+## :memo: Description
+
+<!-- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change. -->
+
+### :dart: Relevant issues
+<!-- Please add relevant opened issues -->
+
+### :gem: Type of change
+
+<!-- Please delete options that are not relevant. -->
+
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] This change requires a documentation update
+
+### :scroll: Example code
+```js
+
+``` 
+
+## :vertical_traffic_light: How Has This Been Tested?
+
+Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration
+
+- [ ] Test A
+- [ ] Test B
+
+## :checkered_flag: Checklist:
+
+- [ ] My code follows the style guidelines of this project
+- [ ] I have performed a self-review of my own code
+- [ ] **I have added tests that prove my fix is effective or that my feature works**
+- [ ] **New and existing unit tests pass locally with my changes**
+- [ ] I have commented my code, particularly in hard-to-understand areas

.github/workflows/build.yml

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+name: CI
+
+on:
+  pull_request:
+  merge_group:
+  push:
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: suzuki-shunsuke/[email protected]