Simplify output from config compass and load script

[xylar]

The verbose output from mamba and from installing the compass package is distracting and confusing to developers.

[xylar]

This is something I've been wanting to do for a long time. Now, when you configure it looks something like this:

$ ./conda/configure_compass_env.py --mpi all --env_name compass_simplify_config

Warning: --conda path not supplied.  Using conda installed at:
   /home/xylar/miniconda3

Logging to: conda/logs/prebootstrap.log

Doing initial setup

Updating conda environment for installing compass

Creating the compass conda environment


 Running:
   source /home/xylar/miniconda3/etc/profile.d/conda.sh
   conda activate compass_bootstrap
   /home/xylar/code/compass/simplify_env_config_output/conda/bootstrap.py --mpi all --env_name compass_simplify_config

Logging to: conda/logs/bootstrap.log

Configuring environment(s) for the following compilers and MPI libraries:
  gnu, mpich
  gnu, openmpi

Updating compass_simplify_config

Writing:
   /home/xylar/code/compass/simplify_env_config_output/load_compass_simplify_config_mpich.sh

Writing:
   /home/xylar/code/compass/simplify_env_config_output/load_compass_simplify_config_openmpi.sh

When you source a load script, it looks like this:

$ source load_compass_simplify_config_mpich.sh 
Loading conda environment
Done.

Reinstalling compass package in edit mode...
Done.

[xylar]

@mark-petersen and @matthewhoffman, I'm not going to ask for your reviews on this but would be happy to follow up with a PR to tweak the output later.