enable custom tile matrix sets (#2074)

[tomkralidis]

Overview

This PR enables custom TMS definitions in the base MVT provider (if schemes is defined, else defaults).

Related Issue / discussion

#2074

Additional information

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

[lindakarlovska]

@tomkralidis Thank you for implementing this! I have tested it using my real usecase. Unfortunately, I do not have rights to push directly to this branch so I created different one in my fork. Could you please incorporate here these two commits 5c94c6a and e59d804 from https://github.com/lindakarlovska/pygeoapi/commits/tiles-custom/? Then we can merge it :-)

[tomkralidis]

menting this! I have tested it using my real usecase. Unfortunately, I do not have rights to push directly to this branch so I created different one in my fork. Could you please incorporate here these two commits 5c94c6a and e59d804 from https://github.com/lindakarlovska/pygeoapi/commits/tiles-custom/?

Thanks @lindakarlovska, applied in e2df0b2.

Then we can merge it :-)

As with all pygeoapi PRs, an approval is required from a pygeoapi core committer before merging.