Added functions to send and see proof before valid participation from random challenge

src/app/services/api/encoder.ts

@@ -1,4 +1,4 @@
-import {HttpParameterCodec} from '@angular/common/http';
+import { HttpParameterCodec } from '@angular/common/http';
 
 /**
  * Custom HttpParameterCodec
@@ -8,15 +8,12 @@ export class CustomHttpParameterCodec implements HttpParameterCodec {
     encodeKey(k: string): string {
         return encodeURIComponent(k);
     }
-
     encodeValue(v: string): string {
         return encodeURIComponent(v);
     }
-
     decodeKey(k: string): string {
         return decodeURIComponent(k);
     }
-
     decodeValue(v: string): string {
         return decodeURIComponent(v);
     }
@@ -26,15 +23,12 @@ export class IdentityHttpParameterCodec implements HttpParameterCodec {
     encodeKey(k: string): string {
         return k;
     }
-
     encodeValue(v: string): string {
         return v;
     }
-
     decodeKey(k: string): string {
         return k;
     }
-
     decodeValue(v: string): string {
         return v;
     }