feat: add GitHub Actions workflows for automatic labeling of PRs

.github/labeler.yml

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+# This file is used by GitHub Actions to automatically label pull requests based on the files changed.
+# See https://github.com/actions/labeler
+
+# Documentation changes
+documentation:
+  - changed-files:
+      - any-glob-to-any-file: 
+          - '**/*.md'
+          - 'documentation/**/*'
+
+# CLI-related changes
+cli:
+  - changed-files:
+      - any-glob-to-any-file:
+          - 'crates/goose-cli/**/*'
+
+# Rust backend changes
+rust:
+  - changed-files:
+      - any-glob-to-any-file:
+          - 'crates/**/*'
+          - '**/*.rs'
+
+# UI/Desktop application changes
+ui:
+  - changed-files:
+      - any-glob-to-any-file:
+          - 'ui/desktop/**/*'
+          - '**/*.tsx'
+          - '**/*.ts'
+          - '**/*.js'
+          - '**/*.jsx'
+
+# Windows-specific changes
+windows:
+  - changed-files:
+      - any-glob-to-any-file:
+          - 'ui/desktop/src/platform/windows/**/*'
+          - '**/*windows*'
+          - '**/*.bat'
+          - '**/*.ps1'
+
+# Dependency updates
+dependencies:
+  - changed-files:
+      - any-glob-to-any-file:
+          - '**/Cargo.toml'
+          - '**/Cargo.lock'
+          - '**/package.json'
+          - '**/package-lock.json'
+          - '**/yarn.lock'
+          - '**/pnpm-lock.yaml'
+
+
+# Demonstration of labeler for initial Pull Request commit
+labeler:
+  - changed-files:
+      - any-glob-to-any-file: '.github/labeler.yml'

.github/workflows/add-labels.yml

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+name: Add Labels
+
+on:
+  pull_request:
+    types: [opened]
+
+jobs:
+  add_labels_on_opened:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Label PR (opened)
+        uses: actions/labeler@v5
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"
+          configuration-path: .github/labeler.yml
+          sync-labels: false

.github/workflows/sync-labels.yml

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+name: Sync Labels
+
+on:
+  pull_request:
+    types: [synchronize, reopened]
+
+jobs:
+  sync_labels_on_updated:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Label PR (updated)
+        uses: actions/labeler@v5
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"
+          configuration-path: .github/labeler.yml
+          sync-labels: true