rename package from @push.rocks/npmextra to @push.rocks/smartconfig

- Rename all source files from npmextra.* to simpler names (classes.appdata.ts, etc.)
- Rename Npmextra class to Smartconfig
- Config file changed from npmextra.json to smartconfig.json
- KV store path changed from ~/.npmextra/kv to ~/.smartconfig/kv
- Update all imports, tests, and metadata

ts/00_commitinfo_data.ts

@@ -2,7 +2,7 @@
  * autocreated commitinfo by @push.rocks/commitinfo
  */
 export const commitinfo = {
-  name: '@push.rocks/npmextra',
+  name: '@push.rocks/smartconfig',
   version: '5.3.3',
-  description: 'A utility to enhance npm with additional configuration, tool management capabilities, and a key-value store for project setups.'
+  description: 'A comprehensive configuration management library providing key-value storage, environment variable mapping, and tool configuration.'
 }