Adder Global Loading spiner for api calls

src/app/services/loader.service.ts

@@ -0,0 +1,16 @@
+import { Injectable } from '@angular/core';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class LoaderService {
+  private loading: boolean = false;
+  
+  setLoading(loading: boolean){
+    this.loading = loading;
+  }
+
+  getLoading(): boolean{
+    return this.loading;
+  }
+}