Changes

Clip covar simplifications (#1297)

* Initial clip covar changes

* Slightly nicer clipping count behavior

Cmake netcdf fallback (#1294)

* WIP: Compile w/o NetCDF

- Currently failing from a 'version' error, but actually it's because the fortran cmake is testing a small c program to test functionality, but the C hasn't been built yet

* CMake configuration phase works for netcdf, but build fails

* Compiles almost all the way and has the executable clubb_standalone

* No errors to compile w/o netcdf

- CMake configure and build phase ran with no errors

- Clubb was functional after the build

* Fixed to work as a fresh user

- Worked with no netcdf and a clean clone of this branch

* Added blank line

* Got compile.py to run on gfortran, nvhpc, ifort, ifx

 - Needs testing for with/without netcdf pre-installed

* Fixed compiler logic

 - Basically, if not matching the default (gfortran) netcdf, and can't find a different one, then go from scratch.

* Small bug fixes

* Cleaned up code, all lines less than 100 characters

* Commented through code

* Removing redundancy

* Fixes to make -gptl flag work

* Improved comments, replaced .bash with .py in readme's