migrate to new builtin plugin manager with new folder structure

lua/extensions.lua

@@ -0,0 +1,66 @@
+local treesitter_parsers = {
+	"c",
+	"markdown",
+	"python",
+	"java",
+	"cpp",
+	"bash",
+	"lua",
+	"make",
+	"json",
+	"jsonc",
+	"sql",
+	"yaml",
+	"toml",
+	"javascript",
+	"typescript",
+	"gitignore",
+	"go",
+	"rust",
+	"html",
+	"css",
+	"scss",
+	"markdown_inline",
+}
+
+local lsp_server = {
+	"ts_ls",
+	"html",
+	"cssls",
+	"tailwindcss",
+	"lua_ls",
+	"basedpyright",
+	"bashls",
+	"clangd",
+	"rust_analyzer",
+}
+
+local formatter = {
+	"clang_format",
+	"ruff",
+	"stylua",
+	"prettier",
+	"markdown-toc",
+	"markdownlint-cli2",
+	"biome",
+}
+
+local linter = {
+	"eslint_d",
+	"hadolint",
+	"write_good",
+	"markdownlint",
+	"shellcheck",
+	"actionlint",
+	"djlint",
+	"ruff",
+	"codespell",
+	"cspell",
+}
+
+return {
+	ts_parsers = treesitter_parsers,
+	lsp_server = lsp_server,
+	formatter = formatter,
+	linter = linter,
+}