HTML: add safe bbox function for dateline crossing

[tomkralidis]

Overview

This PR adds support to HTML to render (collection) polygons supporting cases with dateline crossing. Note that data is not changed per se, as the bbox adjustment is solely for visualization purposes.

Related Issue / discussion

Downstream in World-Meteorological-Organization/wis2box#1103

Additional information

Current master:

This PR:

Dependency policy (RFC2)

• I have ensured that this PR meets RFC2 requirements

Updates to public demo

• I have ensured that breaking changes to the pygeoapi master demo server have been addressed
  • https://github.com/geopython/demo.pygeoapi.io/blob/master/services/pygeoapi_master/local.config.yml

Contributions and licensing

(as per https://github.com/geopython/pygeoapi/blob/master/CONTRIBUTING.md#contributions-and-licensing)

• I'd like to contribute [feature X|bugfix Y|docs|something else] to pygeoapi. I confirm that my contributions to pygeoapi will be compatible with the pygeoapi license guidelines at the time of contribution
• I have already previously agreed to the pygeoapi Contributions and Licensing Guidelines

[webb-ben]

Would this not affect a bbox of the whole world? Does the bbox function always get passed WGS84?

[tomkralidis]

Would this not affect a bbox of the whole world? Does the bbox function always get passed WGS84?

Updated. The bbox function is working off 4326 as a rule (just as existing functionality to plot is bound to 4326).

[pvgenuchten]

Much cleaner Tom, thanx