refactor(config): use local.lua for machine-specific paths

- Load local.lua at startup and expose via vim.g.cargdev_local
- Update avante.lua to use local config for paths and settings
- Update ideaMap.lua to use IDEA_DIR from local config
- Remove all hardcoded user paths from plugin configs
- Plugins gracefully skip if required local config is missing

lua/cargdev/plugins/lazygit.lua

@@ -1,5 +1,4 @@
 return {
-  --[[ dir = "/Users/carlos/Documents/SSD_Documents/projects/lazygit.nvim", ]]
   "kdheepak/lazygit.nvim",
   cmd = {
     "LazyGit",