chore: move plugins to an upper level

lua/config/plugins/lsp/servers/gopls.lua

@@ -1,15 +0,0 @@
-return {
-  settings = {
-    gopls = {
-      gofumpt = true, -- https://github.com/mvdan/gofumpt a stricter gofmt
-      completeUnimported = true,
-      usePlaceholders = true,
-      analyses = {
-        unusedparams = true,
-      },
-    },
-  },
-  flags = {
-    debounce_text_changes = 150, -- https://github.com/golang/tools/blob/master/gopls/doc/settings.md#change-detection
-  },
-}