feat: add ScatterMap trace for the MapLibre map subplot #223

Job	Run time
Build Wasm Examples (basic)	1m 3s
Clippy	5m 34s
Code Coverage	19s
Build Book	4m 24s
Build Wasm Examples (callback-example)	1m 0s
Rustfmt	15s
Tests (ubuntu-latest, chrome, plotly_ndarray,plotly_image,static_export_default,debug)	3m 26s
Tests (ubuntu-latest, firefox, plotly_ndarray,plotly_image,static_export_geckodriver,static_expor...	2m 17s
Tests (macos-latest, chrome, plotly_ndarray,plotly_image,static_export_default,debug)	3m 28s
Tests (windows-latest, chrome, plotly_ndarray,plotly_image,static_export_chromedriver,debug)	38s
semver	53s
Build Examples (financial_charts)	37s
Build Examples (3d_charts)	34s
Build Examples (customization/multiple_plots_example)	36s
Build Examples (custom_controls)	37s
Build Examples (images)	53s
Build Examples (scientific_charts)	32s
Build Examples (ndarray)	35s
Build Examples (kaleido)	1m 19s
Build Examples (customization/consistent_static_format_export)	1m 43s
Build Examples (basic_charts)	36s
Build Examples (themes)	36s
Build Examples (maps)	43s
Build Examples (statistical_charts)	36s
Build Examples (shapes)	34s
Build Examples (customization/density_mapbox_example)	32s
Build Examples (subplots)	34s
	34m 54s

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