Merge branch 'clhp_map' into 'main'

README.md

app/lib/consts.dart

app/lib/data_classes.dart

app/lib/pages/default_page.dart

app/lib/pages/loading_page.dart

app/lib/server_requests/fetch_markers.dart

app/lib/server_requests/fetch_relation.dart

app/lib/server_requests/init_state.dart

app/lib/utils/custom_search_delegate.dart

app/lib/utils/format_month.dart

app/lib/widgets/choropleth_map.dart

app/lib/widgets/graph_data/bar_data.dart

app/lib/widgets/main_layout.dart

app/lib/widgets/stat_charts.dart

app/pubspec.lock

app/pubspec.yaml

images/geojson-export.png

images/geojson-file.png

images/overpass-query.png

images/resulting-files.png