v0.1 of a cline rules file for the extension (RooCodeInc#1847)

* v0.1 of the cline rules file for the extension

* added changeset

* improved the cline rules file

* added new version of the webview state definition

* added more in depth pass from gemini

Author: NightTrek

.changeset/dull-kangaroos-poke.md

@@ -0,0 +1,5 @@
+---
+"claude-dev": patch
+---
+
+Added a .clinerules file with details about our most common features