feat(proto): add parser

Related to #2307.

lua/nvim-treesitter/parsers.lua

@@ -1050,6 +1050,16 @@ list.m68k = {
   filetype = "asm68k",
 }
 
+list.proto = {
+  install_info = {
+    url = "https://github.com/mitchellh/tree-sitter-proto",
+    branch = "main",
+    files = { "src/parser.c" },
+  },
+  maintainers = { "@fsouza" },
+  filetype = "proto",
+}
+
 local M = {
   list = list,
   filetype_to_parsername = filetype_to_parsername,

queries/proto/folds.scm

@@ -0,0 +1,5 @@
+[
+  (enum)
+  (message)
+  (service)
+] @fold

queries/proto/highlights.scm

@@ -0,0 +1,62 @@
+[
+  "syntax"
+  "package"
+  "option"
+  "import"
+  "service"
+  "rpc"
+  "returns"
+  "message"
+  "enum"
+  "oneof"
+  "repeated"
+  "reserved"
+  "to"
+] @keyword
+
+[
+  (key_type)
+  (type)
+  (message_name)
+  (enum_name)
+  (service_name)
+  (rpc_name)
+  (message_or_enum_type)
+] @type
+
+(enum_field
+  (identifier) @constant)
+
+[
+  (string)
+  "\"proto3\""
+] @string
+
+(int_lit) @number
+
+(float_lit) @float
+
+[
+  (true)
+  (false)
+] @boolean
+
+(comment) @comment
+
+[
+  "("
+  ")"
+  "["
+  "]"
+  "{"
+  "}"
+  "<"
+  ">"
+]  @punctuation.bracket
+
+[
+ ";"
+ ","
+] @punctuation.delimiter
+
+"=" @operator