More bug fixes in the WAMIT and WAMIT2 modules of HydroDyn with wave headings

[luwang00]

Feature or improvement description The PR contains several bug fixes for the WAMIT and WAMIT2 modules of HydroDyn. The bugs are related to the handling of wave headings,

In WAMIT:

• When NBodyMod=2, PtfmRefztRot was not accounted for when checking the WAMIT wave headings.
• The previous correction of WAMIT wave heading when NBodyMod=2 will lead to interpolating out of range.
• The phase shift of wave elevation for the state-space wave-excitation model was implemented incorrectly.

In WAMIT2:

• The checking of WAMIT wave frequencies were not functioning as intended and were unnecessary. This is simply removed.
• The checking of WAMIT wave headings is moved to separate subroutines to minimize code duplication.
• The checking of WAMIT wave headings did not account for PtfmRefztRot when NBodyMod=2. This is now corrected.

Impacted areas of the software HydroDyn

Test results, if applicable No change to existing test results. Will need more r-tests in the future to cover the various options of HydroDyn.