chore: add GitHub workflows, issue templates, and changelog

- Tests, Pint, Release, Changelog, Auto-merge, Deploy Docs workflows
- Bug report template, security policy, contributing guide
- Dependabot config for GitHub Actions
- Remove .idea from tracking
- Keep only premium packages in ecosystem section

.github/release.yml

@@ -0,0 +1,21 @@
+changelog:
+  exclude:
+    labels:
+      - skip-changelog
+    authors:
+      - dependabot
+  categories:
+    - title: Bug Fixes
+      labels:
+        - bug
+        - fix
+    - title: New Features
+      labels:
+        - feature
+        - enhancement
+    - title: Breaking Changes
+      labels:
+        - breaking
+    - title: Other Changes
+      labels:
+        - "*"