Add electrum rpc doc tab for official instance

frontend/src/app/docs/api-docs/api-docs.component.html

@@ -106,6 +106,19 @@
       </div>
     </div>
 
+    <div id="electrs" *ngIf="whichTab === 'electrs'">
+      <div class="doc-content no-sidebar">
+        <div class="doc-item-container">
+          <ng-container #default_electrs_note *ngIf="network.val === '' || network.val === 'mainnet' || network.val === 'testnet'; else signet_electrs_note">
+            <p class="center note">This part of the API is available to <a href='/enterprise'>sponsors</a> only—whitelisting is required.</p>
+          </ng-container>
+          <ng-template #signet_electrs_note>
+            <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
+          </ng-template>
+        </div>
+      </div>
+    </div>
+
   </div>
 </ng-container>
 

frontend/src/app/docs/api-docs/api-docs.component.scss

@@ -1,3 +1,11 @@
+.center {
+  text-align: center;
+}
+
+.note {
+  font-style: italic;
+}
+
 .text-small {
   font-size: 12px;
 }
@@ -116,6 +124,10 @@ li.nav-item {
   float: right;
 }
 
+.doc-content.no-sidebar {
+  width: 100%
+}
+
 h3 {
   margin: 2rem 0 0 0;
 }