Update rangetype and domainset in Coverage providers

[MartinPontius]

Description
As @jerstlouis has pointed out to me, there are two issues in how pygeoapi defines the rangetype and domainset in API Coverages:

1. The definition field in rangetype should indicate semantics not encoding datatype (see RangeType / SWE Common Confusion). The encoding information could go into an additional field encodingInfo as proposed here.
2. The "...Type" suffixes have recently been removed in rangetype and domainset as can be seen in the schema and this commit specifically.

As far as I see the providers rasterio_.py and xarray_.py are affected and possibly some tests.

Steps to Reproduce
Check, e.g., this coverage collection on the demo server:

• rangetype: https://demo.pygeoapi.io/master/collections/gdps-temperature/coverage/rangetype?f=json
• domainset: https://demo.pygeoapi.io/master/collections/gdps-temperature/coverage/domainset?f=json

Expected behavior
The definition field in rangetype contains semantics, not encoding. The encoding is in a new field encodingInfo.
The "...Type" suffixes have been removed.

Screenshots/Tracebacks
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Environment

• OS:
• Python version:
• pygeoapi version:

Additional context
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