Prep Plugin for release on WordPress.org (#23)

* Update translation text domain
* Escape everything that should be escaped.
* Add nonce checks where needed.
* Sanitize all inputs.
* Apply Code style changes across the codebase.
* Correct many deprecation notices.
* Optimize load order of many filters.
* Add Proper Build script
* Use emojii flags
* Fix i18n deprecation  notice for translating too early
* Put all scripts in footer and load async

inc/development/assets/development.css

@@ -9,7 +9,7 @@ body {
     width: 200px;
     content: " ";
     position: absolute;
-    top: 30;
+    top: 30px;
     background: url("../../../assets/img/logo.webp");
     background-size: contain;
     height: 40px;

inc/development/assets/development.scss

@@ -20,7 +20,7 @@ body {
 		width: 200px;
 		content: " ";
 		position: absolute;
-		top: 30;
+		top: 30px;
 		background: url("../../../assets/img/logo.webp");
 		background-size: contain;
 		height: 40px;