add multi object for loop support (#1011)

* run `zig fmt`

* add support for multi object for loops

* add completion tests on multi object for loops

* update minimum zig build version

* use multi object for loops in codebase

* Update tres to latest version

* fix panics when generating document scope on invalid for loops

build.zig

@@ -7,7 +7,7 @@ const zls_version = std.builtin.Version{ .major = 0, .minor = 11, .patch = 0 };
 pub fn build(b: *std.build.Builder) !void {
     comptime {
         const current_zig = builtin.zig_version;
-        const min_zig = std.SemanticVersion.parse("0.11.0-dev.1570+693b12f8e") catch return; // addPackage -> addModule
+        const min_zig = std.SemanticVersion.parse("0.11.0-dev.1681+0bb178bbb") catch return; // implement multi-object for loops
         if (current_zig.order(min_zig) == .lt) {
             @compileError(std.fmt.comptimePrint("Your Zig version v{} does not meet the minimum build requirement of v{}", .{ current_zig, min_zig }));
         }