Add ripple everywhere.

frontend/src/app/components/submit-button/submit-button.component.ts

@@ -1,14 +1,18 @@
 import { CommonModule } from "@angular/common";
 import { Component, EventEmitter, Input, Output } from "@angular/core";
+import { MatRippleModule } from "@angular/material/core";
 import { MatProgressSpinnerModule } from "@angular/material/progress-spinner";
 
-
 @Component({
     selector: 'app-submit-button',
     standalone: true,
-    imports: [MatProgressSpinnerModule, CommonModule],
     templateUrl: 'submit-button.component.html',
-    styleUrl: 'submit-button.component.scss'
+    styleUrl: 'submit-button.component.scss',
+    imports: [
+        CommonModule,
+        MatRippleModule,
+        MatProgressSpinnerModule
+    ]
 })
 export class SubmitButtonComponent {
     @Input() requestPending: boolean = false;