(MAINT) Update GitHub templates

This change copies the default templates for PowerShell repositories
and customizes them for DSC.

In particular, the bug report template is updated to more usefully
reflect errors and issues with DSC, rather than a PowerShell command.

The change includes the feature request template and template config,
because adding any files to the `.github/ISSUE_TEMPLATE` directory
requires all of them to be present - none of the defaults in the
community repository are used when this folder exists.

.github/ISSUE_TEMPLATE/Bug_Report.yml

@@ -0,0 +1,124 @@
+name: Bug report 🐛
+description: Report errors or unexpected behavior 🤔
+labels:
+  - Issue-Bug
+  - Need-Review
+body:
+- type: checkboxes
+  attributes:
+    label: Prerequisites
+    options:
+    - label: Write a descriptive title.
+      required: true
+    - label: Make sure you are able to repro it on the latest version
+      required: true
+    - label: Search the existing issues.
+      required: true
+- type: textarea
+  attributes:
+    label: Summary
+    description: >-
+      Write a short description of the issue at a high-level.
+    placeholder: >-
+      I am experiencing a problem with X.
+      I think Y should be happening but Z is actually happening.
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Steps to reproduce
+    description: >
+      List of steps, sample code, failing test or link to a project that reproduces the behavior.
+      Make sure you place a stack trace inside a code (```) block to avoid linking unrelated issues.
+    placeholder: |-
+      1. Create the following configuration document:
+
+         ```yaml
+         # repro.dsc.config.yaml
+         $schema: https://raw.githubusercontent.com/PowerShell/DSC/main/schemas/2023/08/config/document.json
+         resources:
+         - name: repro
+           type: Test/Echo
+           properties:
+             output: expected value
+         ```
+
+      1. Call the `get` operation on the repro document:
+
+         ```sh
+         dsc config get --path ./repro.dsc.config.yaml
+         ```
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Expected behavior
+    render: console
+    placeholder: |
+      PS> dsc config get --path ./repro.dsc.config.yaml
+      
+      results:
+      - name: repro
+        type: Test/Echo
+        result:
+          actualState:
+            output: expected value
+      messages: []
+      hadErrors: false
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Actual behavior
+    render: console
+    placeholder: |
+      PS> dsc config get --path ./repro.dsc.config.yaml
+      
+      results:
+      - name: repro
+        type: Test/Echo
+        result:
+          actualState:
+            output: other value
+      messages: []
+      hadErrors: false
+  validations:
+    required: true
+- type: textarea
+  attributes:
+    label: Error details
+    description: Paste verbatim output from DSC if it returns an error
+    render: console
+- type: textarea
+  attributes:
+    label: Environment data
+    description: Paste verbatim output from `$PSVersionTable` below.
+    render: PowerShell
+    placeholder: PS> $PSVersionTable
+  validations:
+    required: true
+- type: dropdown
+  validations:
+    required: true
+  attributes:
+    label: Version
+    description: >-
+      Specify the version you are using. Run the `dsc --version` command to get
+      the current version.
+    options:
+      - Latest build from `main`
+      - alpha.5
+      - alpha.4
+      - alpha.3
+      - alpha.2
+      - alpha.1
+    default: 1
+    multiple: false
+
+- type: textarea
+  attributes:
+    label: Visuals
+    description: >
+      Please upload images or animations that can be used to reproduce issues in the area below.
+      Try the [Steps Recorder](https://support.microsoft.com/en-us/windows/record-steps-to-reproduce-a-problem-46582a9b-620f-2e36-00c9-04e25d784e47)
+      on Windows or [Screenshot](https://support.apple.com/en-us/HT208721) on macOS.

.github/ISSUE_TEMPLATE/Feature_Request.yml

@@ -0,0 +1,27 @@
+name: Feature Request / Idea 🚀
+description: >-
+  Suggest a new feature or improvement (this doesn't mean you have to
+  implement it)
+labels:
+  - Issue-Enhancement
+  - Needs Triage
+body:
+- type: textarea
+  attributes:
+    label: Summary of the new feature / enhancement
+    description: >
+      A clear and concise description of what the problem is that the
+      new feature would solve. Try formulating it in user story style
+      (if applicable).
+    placeholder: >-
+      'As a user I want X so that Y...' with X being the being the
+      action and Y being the value of the action.
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: Proposed technical implementation details (optional)
+    placeholder: >
+      A clear and concise description of what you want to happen.
+      Consider providing an example experience with expected result.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,6 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Ask a question
+    url: https://github.com/PowerShell/DSC/discussions/new?category=q-a
+    about: >-
+      If you have a question about DSC, the docs, or this project, ask it here.