feat(lsp): add pbkit.lua file for Protocol Buffers Language Server Protocol integration

lua/absolute/lsp/pbkit.lua

@@ -0,0 +1,8 @@
+return {
+	default_config = {
+		cmd = { "pb", "lsp" },
+		filetypes = { "proto" },
+		single_file_support = true,
+		root_dir = require("lspconfig.util").root_pattern(".git"),
+	},
+}