add tree-sitter-sql submodule

Author: ackurat

.gitmodules

@@ -181,3 +181,6 @@
 [submodule "tree-sitter-systemverilog"]
 	path = tree-sitter-systemverilog
 	url = https://github.com/gmlarumbe/tree-sitter-systemverilog
+[submodule "tree-sitter-sql"]
+	path = tree-sitter-sql
+	url = git@github.com:DerekStride/tree-sitter-sql.git

build.zig

@@ -68,6 +68,7 @@ pub fn build(b: *std.Build) void {
     addParser(b, lib, "rust", null);
     addParser(b, lib, "scala", null);
     addParser(b, lib, "scheme", null);
+    addParser(b, lib, "sql", null);
     addParser(b, lib, "ssh-config", null);
     addParser(b, lib, "superhtml", "tree-sitter-superhtml");
     addParser(b, lib, "swift", null);