Rename join-room component to new conventions

src/app/app.module.ts

@@ -4,7 +4,7 @@ import { NgModule } from '@angular/core';
 
 import { AppComponent } from './app.component';
 import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
-import { JoinRoomComponent } from './components/fragments/join-room/join-room.component';
+import { JoinRoomComponent } from './components/fragments/room-join/room-join.component';
 import { LoginComponent } from './components/fragments/login/login.component';
 import { RegisterComponent } from './components/dialogs/register/register.component';
 import { PasswordResetComponent } from './components/dialogs/password-reset/password-reset.component';

src/app/components/fragments/join-room/join-room.component.spec.ts → src/app/components/fragments/room-join/room-join.component.spec.ts

 import { async, ComponentFixture, TestBed } from '@angular/core/testing';
 
-import { JoinRoomComponent } from './join-room.component';
+import { JoinRoomComponent } from './room-join.component';
 
 describe('JoinRoomComponent', () => {
   let component: JoinRoomComponent;

src/app/components/fragments/join-room/join-room.component.ts → src/app/components/fragments/room-join/room-join.component.ts

@@ -16,8 +16,8 @@ export class JoinErrorStateMatcher implements ErrorStateMatcher {
 
 @Component({
   selector: 'app-join-room',
-  templateUrl: './join-room.component.html',
-  styleUrls: ['./join-room.component.scss']
+  templateUrl: './room-join.component.html',
+  styleUrls: ['./room-join.component.scss']
 })
 export class JoinRoomComponent implements OnInit {