Initial commit: Counter plugin for Obsidian

- Add counter syntax: ~ (number) label
- Implement interactive +/- buttons
- Add CSS styling for counter UI
- Include build configuration and dependencies

manifest.json

@@ -0,0 +1,10 @@
+{
+  "id": "counter-plugin",
+  "name": "Counter Plugin",
+  "version": "1.0.0",
+  "minAppVersion": "0.15.0",
+  "description": "Create interactive counters with +/- buttons using ~ ( ) syntax",
+  "author": "crib",
+  "authorUrl": "https://git.cribdev.com/crib",
+  "isDesktopOnly": false
+}