feat(sproto): add parser

runtime/queries/sproto/highlights.scm

@@ -0,0 +1,47 @@
+(comment) @comment @spell
+
+[
+  "."
+  ":"
+] @punctuation.delimiter
+
+"*" @operator
+
+[
+  "request"
+  "response"
+] @keyword
+
+(type_definition
+  name: (identifier) @type)
+
+(nested_type_definition
+  name: (identifier) @type)
+
+(type_specifier) @type
+
+[
+  "integer"
+  "boolean"
+  "string"
+  "binary"
+  "double"
+] @type.builtin
+
+(protocol_definition
+  name: (identifier) @function)
+
+(field_definition
+  name: (identifier) @property)
+
+(map_specifier
+  key: (identifier) @property)
+
+(integer) @number
+
+[
+  "("
+  ")"
+  "{"
+  "}"
+] @punctuation.bracket