Fix tides on angled boundaries, consolidate regridded of velocity and tracers, add proper body tide parameters, add MOM6's angle calculation.

[manishvenu]

Closes #22, Closes #31

This PR address three problems/improvements in RM6:

• This addresses Tidal regridding doesn't appear to take into account curved lat / lon #22, that the tidal regridding wasn't taking into account a curved boundary. This is because I didn't correctly convert the rotation code from GFDL's NWA25 (See the changes to the ap2ep section)
• Merge the velocity/tracers and tides regridding. They were originally seperated because they were developed independently. We've decided to convert the tides regridding as the generic one...
• (Change the Angle Calculation used in the inputted Hgrid to the MOM6 Version #31) MOM6 has its own way of calculating angle that doesn't read the input hgrid's angle. This PR adds the MOM6 calculation of angles to the hgrid...

Major Changes:

1. Add the rotation to the tides regridder (that was previously missing) AND the rotation missing in regrid_velocity_tracers (oops!)
2. Completely refactor the regridding into a seperate file (regridding.py) and standardize functions & encoding in velocity, tracers, and tides. They still remain seperate functions but contain the same methods.
3. SOLUTION TO ORIGINAL ISSUE: Create new land mask function for the BCs that either fills NaNs (default) or creates a land mask with two exceptions -> ensures corner boundary points are non-NaN & coasts have a buffer of three points (A q, u/v, and another q)
4. Implement MOM6 Angle Calculation in a new file called "rotation.py". Please see MOM6 Angle Calculation #34 for all changes.
5. Add land_mask functions based on generated bathymetry (get_boundary_mask, mask_boundary)

Minor Changes:

1. Minor bug in setup_run_directory when it checked to make sure tidal files exist
2. Add a logger function to utils to make well formatted log statements in regridding.py
3. Reformat the parameters setup_boundary_tides to take the TPXO elevation and velocity filepaths directly instead of a weird combination of folder and product name w/ .nc attached to it (completely my fault)
4. Change default tidal consts to all 10 allowed in MOM6.
5. Add an update the date change for diag_table
6. Change get_glorys_rectangular to get_glorys
7. Add docs on rotation, docker editing, and workflow
8. Reorganize tests

Personal notes that might be easier to understand: https://docs.google.com/document/d/1pgpuFPhGon3mMdP4vj_8KbHp3AkKzoCbT7JS9KACdjU/edit?usp=sharing

[manishvenu]

Because this is such a big change... I'm doing dev in a branch of crr (there's no reason for it to be there other than version control) https://github.com/CROCODILE-CESM/crocodile-regional-ruckus/tree/support_tides_clean_branch/tides_dev

Currently a good way through the merging and some progress on the tides bug.

[manishvenu]

Solution to original bug:

1. Default: Fill NaNs with zeroes by default in BC Files
2. When bathymetry is supplied, create a land mask for the boundaries with certain exceptions (corner points & 3 points at the coast must be real).

[manishvenu]

FYI: Discussion with Alper offline, decided to merge