Add GitHub labeler workflow configuration

struct_module/contribs/github/workflows/labeler.yaml

@@ -0,0 +1,69 @@
+structure:
+  - .github/labeler.yml:
+    content: |
+      # Add 'root' label to any root file changes
+      # Quotation marks are required for the leading asterisk
+      root:
+      - changed-files:
+        - any-glob-to-any-file: '*'
+
+      # Add 'AnyChange' label to any changes within the entire repository
+      AnyChange:
+      - changed-files:
+        - any-glob-to-any-file: '**'
+
+      # Add 'Documentation' label to any changes within 'docs' folder or any subfolders
+      Documentation:
+      - changed-files:
+        - any-glob-to-any-file: docs/**
+
+      # Add 'Documentation' label to any file changes within 'docs' folder
+      Documentation:
+      - changed-files:
+        - any-glob-to-any-file: docs/*
+
+      # Add 'Documentation' label to any file changes within 'docs' or 'guides' folders
+      Documentation:
+      - changed-files:
+        - any-glob-to-any-file:
+          - docs/*
+          - guides/*
+
+      ## Equivalent of the above mentioned configuration using another syntax
+      Documentation:
+      - changed-files:
+        - any-glob-to-any-file: ['docs/*', 'guides/*']
+
+      # Add 'Documentation' label to any change to .md files within the entire repository
+      Documentation:
+      - changed-files:
+        - any-glob-to-any-file: '**/*.md'
+
+      # Add 'source' label to any change to src files within the source dir EXCEPT for the docs sub-folder
+      source:
+      - all:
+        - changed-files:
+          - any-glob-to-any-file: 'src/**/*'
+          - all-globs-to-all-files: '!src/docs/*'
+
+      # Add 'feature' label to any PR where the head branch name starts with `feature` or has a `feature` section in the name
+      feature:
+      - head-branch: ['^feature', 'feature']
+
+      # Add 'release' label to any PR that is opened against the `{{@ current_repo() | default_branch @}}` branch
+      release:
+      - base-branch: '{{@ current_repo() | default_branch @}}'
+  - .github/workflows/labeler.yaml:
+      content: |
+        name: "labeler"
+        on:
+        - pull_request_target
+
+        jobs:
+          labeler:
+            permissions:
+              contents: read
+              pull-requests: write
+            runs-on: ubuntu-latest
+            steps:
+            - uses: actions/labeler@{{@ "actions/labeler" | latest_release @}}