feat: add padded-test-blocks

[wincent]

Closes: #65

[wincent]

Haven't tested this in liferay-portal yet, but it passes the small test suite that you can see in this PR.

Will probably want to share the logic here with the "no-it-should" rule, which currently just checks it() calls but could/should also check it.only(), it.skip() etc. (Although note, we have another lint that bans it.only(), but I imagine it should be compatible.)

[wincent]

Tested this on liferay-portal itself; it finds three issues and autofixes them like this:

diff --git a/modules/apps/dynamic-data-mapping/dynamic-data-mapping-form-builder/test/js/components/RuleBuilder/RuleBuilder.es.js b/modules/apps/dynamic-data-mapping/dynamic-data-mapping-form-builder/test/js/components/RuleBuilder/RuleBuilder.es.js
index 76ac6e0d84fe..080418f7f72b 100644
--- a/modules/apps/dynamic-data-mapping/dynamic-data-mapping-form-builder/test/js/components/RuleBuilder/RuleBuilder.es.js
+++ b/modules/apps/dynamic-data-mapping/dynamic-data-mapping-form-builder/test/js/components/RuleBuilder/RuleBuilder.es.js
@@ -203,6 +203,7 @@ describe('RuleBuilder', () => {
 
 		component = new RuleBuilder(baseConfig);
 	});
+
 	afterEach(() => {
 		const addbutton = document.querySelector('#addFieldButton');
 
@@ -212,6 +213,7 @@ describe('RuleBuilder', () => {
 
 		dom.exitDocument(addbutton);
 	});
+
 	it('renders the list of rules when mode is set to view', () => {
 		component.setState({mode: 'view'});
 
diff --git a/modules/apps/dynamic-data-mapping/dynamic-data-mapping-form-builder/test/js/components/RuleList/RuleList.es.js b/modules/apps/dynamic-data-mapping/dynamic-data-mapping-form-builder/test/js/components/RuleList/RuleList.es.js
index 28aaecd18e94..2086f455044f 100644
--- a/modules/apps/dynamic-data-mapping/dynamic-data-mapping-form-builder/test/js/components/RuleList/RuleList.es.js
+++ b/modules/apps/dynamic-data-mapping/dynamic-data-mapping-form-builder/test/js/components/RuleList/RuleList.es.js
@@ -78,6 +78,7 @@ describe('RuleList', () => {
 	beforeEach(() => {
 		jest.useFakeTimers();
 	});
+
 	afterEach(() => {
 		if (component) {
 			component.dispose();