Fix git ioc bug

[adedamola-sode]

Seperated guibuilder and datatypes
Implemented fetching from git for ioc_yaml

[codecov]

Codecov Report

Attention: Patch coverage is 90.68323% with 15 lines in your changes missing coverage. Please review.

Project coverage is 91.32%. Comparing base (8e56985) to head (4444b40).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/phoebus_guibuilder/guibuilder.py	81.81%	8 Missing ⚠️
src/phoebus_guibuilder/git_utilities.py	93.67%	5 Missing ⚠️
src/phoebus_guibuilder/__main__.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #21       +/-   ##
===========================================
+ Coverage   52.00%   91.32%   +39.32%     
===========================================
  Files           3        5        +2     
  Lines         100      173       +73     
===========================================
+ Hits           52      158      +106     
+ Misses         48       15       -33     

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