chore: convert to yaml issue templates

.github/ISSUE_TEMPLATE/BUG-REPORT.yaml

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+name: Bug Report
+description: File a bug report to help us improve
+title: "[Bug]: "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        **rules_nodejs is mostly unmaintained!**
+
+        Only the "core" module (code under the /nodejs folder) is maintained by volunteers from Aspect.dev.
+        This includes only the nodejs toolchain and a few Provider types.
+
+        If you're having an issue with anything else, you can still file it but you shouldn't expect any help.
+
+        If you're looking for support, try the `#javascript` channel on [Bazel slack](https://slack.bazel.build).
+
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What happened?
+      description: Also tell us, what did you expect to happen?
+      placeholder: Tell us what you see!
+    validations:
+      required: true
+
+  - type: textarea
+    id: version
+    attributes:
+      label: Version
+      description: Please tell us about your environment
+      value: |
+        Development (host) and target OS/architectures:
+
+        Output of `bazel --version`:
+
+        Version of rules_nodejs, or other relevant rules from your
+        `WORKSPACE` or `MODULE.bazel` file:
+
+        Language(s) and/or frameworks involved:
+    validations:
+      required: true
+
+  - type: textarea
+    id: repro
+    attributes:
+      label: How to reproduce
+      description: Your bug is more likely to be resolved if you provide the steps to reproduce, and if possible a minimal demo of the problem.
+      render: shell
+
+  - type: textarea
+    id: other
+    attributes:
+      label: Any other information?
+      description: |
+        (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, things you've tried, links for us to have context, eg. stackoverflow, gitter, etc)

.github/ISSUE_TEMPLATE/FEATURE-REQUEST.yaml

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+name: Feature Request
+description: Suggest an idea for the rules_nodejs toolchain
+title: "[FR]: "
+labels: ["enhancement"]
+body:
+
+  - type: markdown
+    attributes:
+      value: |
+        **rules_nodejs is mostly unmaintained!**
+
+        Only the "core" module (code under the /nodejs folder) is maintained by volunteers from Aspect.dev.
+        This includes only the nodejs toolchain and a few Provider types.
+
+        Features outside that module are probably never going to be built or accepted.
+
+  - type: textarea
+    id: current
+    attributes:
+      label: What is the current behavior?
+      description: To make sure we agree on this.
+
+  - type: textarea
+    id: idea
+    attributes:
+      label: Describe the feature
+      description: What is the motivation / use case for changing the behavior?
+    validations:
+      required: true