Add GitHub Updater support, fix bugs, and add EDD license tracking

.github/workflows/release.yml

@@ -0,0 +1,34 @@
+name: Build Release
+
+on:
+  push:
+    tags:
+      - '*'
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Get plugin version
+        id: version
+        run: echo "version=${GITHUB_REF#refs/tags/}" >> "$GITHUB_OUTPUT"
+
+      - name: Build zip
+        run: |
+          plugin_name="fluent-crm-custom-features"
+          mkdir "$plugin_name"
+          cp -r classes "$plugin_name/"
+          cp *.php "$plugin_name/"
+          zip -r "${plugin_name}.zip" "$plugin_name"
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: fluent-crm-custom-features.zip
+          generate_release_notes: true

.gitignore

@@ -1,6 +1,7 @@
 # Dependencies
 /vendor/
-/vendor-prefixed/
+/vendor-prefixed/*
+!/vendor-prefixed/.gitkeep
 /node_modules/
 
 # Composer