Simplify structure for nvim config files

src_files/.config/nvim/lsp/clangd.lua

@@ -0,0 +1,5 @@
+return {
+    cmd = { 'clangd' },
+    root_markers = { '.clangd', 'compile_commands.json' },
+    filetypes = { 'c', 'cpp' },
+}

src_files/.config/nvim/lsp/ruby.lua

@@ -0,0 +1,6 @@
+return {
+    cmd = { "ruby-lsp" },
+    filetypes = { "ruby", "eruby" },
+    root_markers = { "Gemfile", ".git" },
+    init_options = { formatter = "auto" },
+}