move RXM-PMP message to SET

[semuadmin]

pyubx2 Pull Request Template

Description

RXM-PMP is incorrectly defined as a GET (output) rather than SET (input) message. This PR moves RXM-PMP message definitions (2 versions) into the SET rather than GET dictionary.

Fixes Inability to upload SPARTN correction messages into receiver via RXM-PMP (L-band stream)

Testing

Please test all changes, however trivial, against the supplied unittest suite tests/test_*.py e.g. by executing the tests/testsuite.py module or using your IDE's native Python unittest integration facilities. Please describe any test cases you have amended or added to this suite to maintain >= 99% code coverage.

If you're adding new UBX message definitions for Generation 9+ devices, please check for any corresponding configuration database updates (ubxtypes_configdb.py).

• [x] 5 tests amended.

Checklist:

• [x] My code follows the style guidelines of this project (see CONTRIBUTING.MD).
• [x] I have performed a self-review of my own code.
• [x] (if appropriate) I have cited my u-blox documentation source(s).
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have made corresponding changes to the documentation.
• [x] (if appropriate) I have added test cases to the tests/test_*.py unittest suite to maintain >= 99% code coverage.
• [x] I have tested my code against the full tests/test_*.py unittest suite.
• [x] My changes generate no new warnings.
• [x] Any dependent changes have been merged and published in downstream modules.
• [x] I understand and acknowledge that the code will be published under a BSD 3-Clause license.