bring over the odinfmt code

core/odin/format/format.odin

@@ -0,0 +1,35 @@
+package odin_format
+
+import "core:odin/printer"
+import "core:odin/parser"
+import "core:odin/ast"
+
+default_style := printer.default_style;
+
+simplify :: proc(file: ^ast.File) {
+
+}
+
+format :: proc(source: [] u8, config: printer.Config, allocator := context.allocator) -> ([] u8, bool) {
+
+    pkg := ast.Package {
+        kind = .Normal,
+    };
+
+    file := ast.File {
+        pkg = &pkg,
+        src = source,
+    };
+
+    p := parser.default_parser();
+
+    ok := parser.parse_file(&p, &file);
+
+    if !ok || file.syntax_error_count > 0  {
+        return {}, false;
+    }
+
+    prnt := printer.make_printer(config, allocator);
+
+    return transmute([]u8) printer.print(&prnt, &file), true;
+}