fix(neovim): Blank to default lsp configurations

- Configuration for files under `/lsp` are added

common/.config/nvim/lsp/shellharden.lua

@@ -1 +1,4 @@
-return {}
+return {
+    cmd = { "shellharden", "--lsp" },
+    filetypes = { "sh", "bash", "zsh" },
+}