refactor: streamline documentation and configuration for eBPF project

Removed unnecessary plugins from mkdocs.yml to simplify the documentation setup. Introduced requirements-docs.txt to manage MkDocs and related dependencies. Added GitHub Actions workflow for automated documentation deployment. Created comprehensive contributing guide and templates to facilitate community contributions. Enhanced the first tool and fundamentals documentation for better clarity and structure.

Author: iamvishnuks

.github/workflows/docs.yml

@@ -0,0 +1,67 @@
+name: Deploy MkDocs Documentation
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'docs/**'
+      - 'mkdocs.yml'
+      - '.github/workflows/docs.yml'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'docs/**'
+      - 'mkdocs.yml'
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  # Build job
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          # Fetch full history for git-related plugins (if we add them later)
+          fetch-depth: 0
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+          cache: 'pip'
+
+      - name: Install MkDocs and dependencies
+        run: |
+          pip install -r requirements-docs.txt
+
+      - name: Build MkDocs site
+        run: mkdocs build --verbose --clean --strict
+
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v2
+        with:
+          path: ./site
+
+  # Deployment job (only runs on main branch)
+  deploy:
+    if: github.ref == 'refs/heads/main'
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2