Create labeler.yml

- Issues or pull requests with changes in `src/**/*.js` and `*.html` will get the `bug` label.
- Changes in `docs/**` and `*.md` will get the `documentation` label.
- Changes in `features/**` will get the `enhancement` label.

.github/labeler.yml

@@ -0,0 +1,11 @@
+# Automatically label based on file paths
+bug:
+  - "src/**/*.js"
+  - "*.html"
+
+documentation:
+  - "docs/**"
+  - "*.md"
+
+enhancement:
+  - "features/**"