Add ScatterGeo trace support #530

Job	Run time
Code Coverage	9s
Tests (windows-latest)	4m 41s
Tests (macos-latest)	2m 34s
Tests (ubuntu-latest)	2m 31s
Build Wasm Examples (basic)	52s
Clippy	3m 7s
semver	47s
Build Wasm Examples (callback-example)	53s
Build Examples (basic_charts)	24s
Build Examples (kaleido)	1m 32s
Rustfmt	16s
Build Examples (3d_charts)	28s
Build Examples (custom_controls)	23s
Build Examples (financial_charts)	22s
Build Examples (images)	42s
Build Examples (scientific_charts)	22s
Build Examples (ndarray)	23s
Build Examples (maps)	22s
Build Examples (shapes)	29s
Build Examples (subplots)	22s
	21m 39s

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