Add ripple everywhere.

frontend/src/app/components/publications-search-bar/publications-search-bar.component.ts

@@ -1,6 +1,6 @@
-import { HttpParams } from "@angular/common/http";
 import { Component, inject } from "@angular/core";
 import { FormBuilder, FormControl, ReactiveFormsModule, Validators } from "@angular/forms";
+import { MatRippleModule } from "@angular/material/core";
 import { MatIconModule } from "@angular/material/icon";
 import { Router } from "@angular/router";
 
@@ -11,8 +11,9 @@ import { Router } from "@angular/router";
     styleUrl: './publications-search-bar.component.scss',
     standalone: true,
     imports: [
-        ReactiveFormsModule,
-        MatIconModule
+        MatIconModule,
+        MatRippleModule,
+        ReactiveFormsModule
     ],
     providers: []
 })