Tweak metadata

Author: highbyte

tools/vscode-extension/package.json

@@ -3,7 +3,7 @@
   "displayName": "6502 Debugger for dotnet-6502",
   "version": "0.1.0",
   "publisher": "highbyte",
-  "description": "Debug 6502 assembly code programs using the dotnet-6502 emulator",
+  "description": "Debug 6502 assembly code programs for the Commodore 64 (C64) and other 6502-based systems using the dotnet-6502 emulator written in .NET. Supports ca65/cc65 toolchains.",
   "author": {
     "name": "highbyte"
   },
@@ -19,6 +19,9 @@
   "categories": [
     "Debuggers"
   ],
+  "keywords": [
+    "6502", "C64", "Commodore 64", "ca65", "cc65"
+  ],
   "activationEvents": [
     "onDebugResolve:dotnet6502",
     "onDebugDynamicConfigurations:dotnet6502"