feat: add a rule to enforce braces for if/do/for/while statements. (#180)

Co-authored-by: Morgante Pell <[email protected]>

Author: scr2em

.grit/patterns/js/curly.md

@@ -0,0 +1,69 @@
+---
+title: Enforces braces for if/for/do/while statements.
+tags: [good-practice]
+---
+This matches the [eslint rule](https://eslint.org/docs/latest/rules/curly).
+
+
+```grit
+engine marzano(1.0)
+language js
+
+or {
+    `if($_) $body`,
+    for_statement($body),
+    while_statement($body),
+    do_statement($body),
+} where {
+    $body <: not statement_block(),
+    $body => `{$body}`,
+}
+
+```
+
+Code examples:
+## if 
+```js
+if (x > 0)
+    doStuff();
+```
+will become 
+```js
+if (x > 0) {
+  doStuff();
+}
+```
+## for
+```js
+for (var i = 0; i < 10; i++)
+    doStuff();
+```
+will become 
+```js
+for (var i = 0; i < 10; i++) {
+  doStuff();
+}
+```
+## while
+```js   
+while (x > 0)
+    doStuff();
+```
+will become 
+```js
+while (x > 0) {
+  doStuff();
+}
+```
+## do
+```js
+do
+    doStuff();
+while (x > 0);
+```
+will become 
+```js
+do {
+  doStuff();
+} while (x > 0);
+```