support install rules through vscode extensions

[botingw]

Description

have an vscode extension expose this tool to more Cline and Roo Code users.

How

UI in extension:
install, sync, clean, list available rules_template
when click them, execute corresponding commands in src/manage_rules.py, target path is vscode users' workspace or opened folder

codebase

src/manage_rules.py
docs/analysis/manage_rules_script_design.md

[botingw]

[x] publish in vscode marketplace

• README still need polish

[] publish in non-vscode marketplace (Open VSX Registry, Code Extension Marketplace)