Migrate to AdvancedMarkerElement

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"As of February 21st, 2024 (v3.56), google.maps.Marker is deprecated. We encourage you to transition to the new google.maps.marker.AdvancedMarkerElement class. Advanced markers provide substantial improvements over the legacy google.maps.Marker class." - https://developers.google.com/maps/documentation/javascript/advanced-markers/migration

Advanced Markers offer several features, one of which is a text box that can appear next to the marker adding more details - which is the feature I am particularly interested in.