registry changes

[RamakrishnaVellala]

1. Rename Service provider portal base to Agent portal base
2. New package in registry (openg2p-registry) - Registration Portal Base

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 26.53061% with 36 lines in your changes missing coverage. Please review.

Project coverage is 67.71%. Comparing base (baf5df8) to head (d9e1342).

Files with missing lines	Patch %	Lines
g2p_registration_portal_base/controllers/main.py	13.33%	26 Missing ⚠️
g2p_agent_portal_base/controllers/main.py	47.36%	10 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           17.0-1.4     #190      +/-   ##
============================================
- Coverage     68.00%   67.71%   -0.30%     
============================================
  Files           164      163       -1     
  Lines          4398     4414      +16     
  Branches        623      626       +3     
============================================
- Hits           2991     2989       -2     
- Misses         1313     1331      +18     
  Partials         94       94              

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