Deprecate kaleido #667

Job	Run time
Clippy	3m 50s
Rustfmt	16s
semver	57s
Tests (ubuntu-latest)	2m 58s
Tests (macos-latest)	5m 29s
Tests (windows-latest)	6m 31s
Build Wasm Examples (callback-example)	57s
Build Wasm Examples (basic)	56s
Code Coverage	22s
Build Book	3m 15s
Build Examples (custom_controls)	35s
Build Examples (financial_charts)	36s
Build Examples (basic_charts)	35s
Build Examples (3d_charts)	36s
Build Examples (images)	47s
Build Examples (customization)	35s
Build Examples (kaleido)	1m 36s
Build Examples (scientific_charts)	31s
Build Examples (themes)	36s
Build Examples (subplots)	31s
Build Examples (ndarray)	33s
Build Examples (maps)	43s
Build Examples (shapes)	34s
Build Examples (static_export)	1m 32s
	35m 51s

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