feat(traces): add Funnel and Waterfall trace types #281

Job	Run time
Build Wasm Examples (basic)	1m 6s
Build Examples (customization/density_mapbox_example)	49s
Code Coverage	11s
Clippy	5m 39s
Rustfmt	14s
Tests (ubuntu-latest, firefox, plotly_ndarray,plotly_image,static_export_geckodriver,static_expor...	3m 32s
Build Wasm Examples (callback-example)	56s
Build Examples (customization/multiple_plots_example)	34s
Tests (macos-latest, chrome, plotly_ndarray,plotly_image,static_export_default,debug)	4m 25s
Build Examples (custom_controls)	36s
Tests (ubuntu-latest, chrome, plotly_ndarray,plotly_image,static_export_default,debug)	3m 35s
Tests (windows-latest, chrome, plotly_ndarray,plotly_image,static_export_chromedriver,debug)	8m 21s
Build Examples (3d_charts)	34s
Build Examples (customization/consistent_static_format_export)	1m 44s
Build Examples (financial_charts)	31s
Build Examples (ndarray)	29s
semver	49s
Build Examples (subplots)	37s
Build Examples (images)	56s
Build Examples (themes)	39s
Build Examples (basic_charts)	32s
Build Examples (statistical_charts)	37s
Build Examples (shapes)	35s
Build Examples (maps)	43s
Build Examples (kaleido)	1m 26s
Build Examples (scientific_charts)	37s
Build Book	4m 29s
	45m 16s

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