fix(vis-type: bar): grouping with zero values

[dvdanielamoitzi]

@dv-usama-ansari fixing a grouping issue for the barchart

Summary of changes

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[dv-usama-ansari]

The test assertions have been changed in 1b52b4c since those are the correct value as compared to the previous changes. Previously, 0 values for globalDomain were set to ±Infinity

visyn_core/src/vis/bar/interfaces/internal/helpers/generate-aggregated-data-lookup.ts

Line 87 in 4e489cc

aggregate || Infinity,

visyn_core/src/vis/bar/interfaces/internal/helpers/generate-aggregated-data-lookup.ts

Line 91 in 4e489cc

aggregate || -Infinity,

visyn_core/src/vis/bar/interfaces/internal/helpers/generate-aggregated-data-lookup.ts

Line 96 in 4e489cc

aggregate || Infinity,

visyn_core/src/vis/bar/interfaces/internal/helpers/generate-aggregated-data-lookup.ts

Line 100 in 4e489cc

aggregate || -Infinity,

[dv-usama-ansari]

When all the values of an aggregation are 0 (not null or undefined), the bar chart does not show up since it cannot plot bars with 0 width. This happens for the following combination of configuration:

Me and @thinkh discussed came to a conclusion that there is unfortunately no way to show a bar with zero width. We should show a message to the user in such a case and prompt him/her to change the aggregation type or column selected

[dv-usama-ansari]

🟢 Thank you for the changes! It looks good from my side. 👍

[dv-usama-ansari]

Added column description in the axis labels as discussed with @dvdanielamoitzi in 8d91a89

The description could be configured to show based on a new property in the config showColumnDescriptionText which defaults to false

There is some clipping when there is not enough space which can be addressed by adding tooltips

Also added documentation for various interfaces and enums in 2062e11