chore: move plugins to an upper level

lua/config/plugins/navic.lua

@@ -1,19 +0,0 @@
-local M = {
-  "SmiteshP/nvim-navic",
-}
-
-M.config = function()
-  require("nvim-navic").setup({
-    icons = icons.kind,
-    highlight = true,
-    lsp = {
-      auto_attach = true,
-    },
-    click = true,
-    separator = " " .. icons.ui.ChevronRight .. " ",
-    depth_limit = 0,
-    depth_limit_indicator = "..",
-  })
-end
-
-return M