Refactor gridded wave post

[AntonMFernando-NOAA]

Description

The gridded wave post (wavepostsbs) script currently loops over all forecast hours and acts as its own post manager. Other component post and product scripts operate on one forecast time. This PR will update the wave post to match other components, that creates a bunch of short jobs instead of one long job (per member).
Resolves #2290

Type of change

• Bug fix (fixes something broken)
• New feature (adds functionality)

Change characteristics

• Is this a breaking change (a change in existing functionality)? NO
• Does this change require a documentation update? NO
• Does this change require an update to any of the following submodules? NO

How has this been tested?

• Run CI tests in HERA, ORION, and HERCULES

Checklist

• Gridded wave post scripts that process only one forecast hour specified by the workflow manager (rocoto/ecflow)
• Rocoto workflow updated to create the corresponding tasks for the new paradigm for both GFS and GEFS
• Output identical to current system for both GFS and GEFS