Add shortcut for submitting post (#1163)

Co-authored-by: Dessalines <dessalines@users.noreply.github.com>

src/shared/components/common/markdown-textarea.tsx

@@ -435,33 +435,48 @@ export class MarkdownTextArea extends Component<
   handleKeyBinds(i: MarkdownTextArea, event: KeyboardEvent) {
     if (event.ctrlKey) {
       switch (event.key) {
-        case "k":
+        case "k": {
           i.handleInsertLink(i, event);
           break;
-        case "b":
+        }
+        case "Enter": {
+          if (!this.isDisabled) {
+            i.handleSubmit(i, event);
+          }
+
+          break;
+        }
+        case "b": {
           i.handleInsertBold(i, event);
           break;
-        case "i":
+        }
+        case "i": {
           i.handleInsertItalic(i, event);
           break;
-        case "e":
+        }
+        case "e": {
           i.handleInsertCode(i, event);
           break;
-        case "8":
+        }
+        case "8": {
           i.handleInsertList(i, event);
           break;
-        case "s":
+        }
+        case "s": {
           i.handleInsertSpoiler(i, event);
           break;
-        case "p":
+        }
+        case "p": {
           if (i.state.content) i.handlePreviewToggle(i, event);
           break;
-        case ".":
+        }
+        case ".": {
           i.handleInsertQuote(i, event);
           break;
         }
       }
     }
+  }
 
   handlePreviewToggle(i: MarkdownTextArea, event: any) {
     event.preventDefault();