add custom button in google map angular
<agm-map [latitude]="lat" [longitude]="lng" [zoom]=12 [mapTypeControl]="true" (boundsChange)="centerChanged($event)" (idle)="loadParkings()"
    (mapReady)="mapReady($event)" (boundsChange)="boundsChanged($event)">
    <button id="Settings" class="toggle-button controls button" [hidden]="hideSettings">
        <mat-icon aria-hidden="true">settings</mat-icon>
    </button>
    <button id="Profile" class="toogle-button controls button" (click)="profileClicked()">
        <mat-icon aria-hidden="true">account_circle</mat-icon>
    </button>
    <button id="Logout" class="toggle-button controls button" (click)="logout()">Logout</button>
    <input id="Map-Search" class="controls" type="text" placeholder="Search Box">
    <agm-marker *ngFor="let park of parkings" [latitude]="park.location[0]" [longitude]="park.location[1]"></agm-marker>
</agm-map>
declare const google: any;
@Component({
  selector: 'app-map',
  templateUrl: './map.component.html',
  styleUrls: ['./map.component.css'],
})
export class MapComponent {
    map: any;
    searchBox: any;
    [...]
    mapReady(event: any) {
        this.map = event;
        const input = document.getElementById('Map-Search');
        this.searchBox = new google.maps.places.SearchBox(input);
        this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(document.getElementById('Settings'));
        this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(document.getElementById('Profile'));
        this.map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);
        this.map.controls[google.maps.ControlPosition.TOP_RIGHT].push(document.getElementById('Logout'));
        this.searchBox.addListener('places_changed', () => this.goToSearchedPlace());
    }
    goToSearchedPlace() {
        const places = this.searchBox.getPlaces();
        if (places.length === 0) {
        return;
        }
        const bounds = new google.maps.LatLngBounds();
        places.forEach((place) => {
        if (place.geometry.viewport) {
            bounds.union(place.geometry.viewport);
        } else {
            bounds.extend(place.geometry.location);
        }
        });
        this.map.fitBounds(bounds);
    }
}