GOATS-1117: Refactor to address how to update settings in a non-intrusive way.

[davner]

• GOATS-1118: Remove TOMToolkit legacy install code.
• GOATS-1119: Include typer commands for install and run.
• GOATS-1120: Add copier for templating installation.
• GOATS-1121: Use copier for updating settings.
• GOATS-1122: Update documentation to reflect new install process.
• GOATS-1123: Add headless mode for CLI.
• GOATS-1124: Add tests for new CLI commands and installation process.

This would add copier and typer to our dependencies.
https://anaconda.org/channels/conda-forge/packages/typer/overview
https://anaconda.org/channels/conda-forge/packages/copier/overview
Which are both available on conda-forge.

Checklist

• Added a release note in doc/changes using the PR number.

[codecov]

Codecov Report

❌ Patch coverage is 90.82905% with 125 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.67%. Comparing base (d368f09) to head (dd852d5).

Files with missing lines	Patch %	Lines
...template/{{ project_name }}/settings/base.py.jinja	5.19%	73 Missing ⚠️
...late/{{ project_name }}/settings/__init__.py.jinja	0.00%	16 Missing ⚠️
src/goats_cli/commands/install.py	85.71%	13 Missing and 1 partial ⚠️
tests/goats_cli/commands/test_run.py	95.59%	7 Missing ⚠️
tests/goats_cli/commands/test_install.py	95.28%	3 Missing and 2 partials ⚠️
src/goats_cli/cli.py	84.21%	2 Missing and 1 partial ⚠️
src/goats_cli/goats_template/manage.py.jinja	72.72%	3 Missing ⚠️
...ts/goats_cli/commands/test_copy_recopy_template.py	97.70%	1 Missing and 1 partial ⚠️
..._name }}/settings/environments/production.py.jinja	66.66%	1 Missing ⚠️
...ate/{{ project_name }}/settings/generated.py.jinja	93.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #517      +/-   ##
==========================================
+ Coverage   78.51%   80.67%   +2.16%     
==========================================
  Files         311      325      +14     
  Lines       11840    12584     +744     
  Branches      674      695      +21     
==========================================
+ Hits         9296    10152     +856     
+ Misses       2404     2300     -104     
+ Partials      140      132       -8     

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