Adds MWV and MDA parsers

[AndrewLipscomb]

Adds a pair of parsers for WIMDA and WIMWV. No GPS Fix related messaging parsing for this set as they are both weather station based messages.

[elpiel]

Thank you for working on this! I will make sure to review the PR in the coming days.

[codecov[bot]]

Codecov Report

Base: 79.50% // Head: 79.50% // No change to project coverage :thumbsup:

Coverage data is based on head (379d7a2) compared to base (379d7a2). Patch has no changes to coverable lines.

:exclamation: Current head 379d7a2 differs from pull request most recent head a50f483. Consider uploading reports for the commit a50f483 to get more accurate results

Additional details and impacted files

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[AndrewLipscomb]

Alrighty - still getting the hang of Rust's docs and linting, but cargo fmt and cargo clippy seem like happy bois now. Added the test case too

Edit - forgot the pub members on MDA - fixed now. Give it a whirl Shirl