feat: replace injected /Plugins directory with lib dependency

[jsnwesson]

Context:
Now that the openedx/frontend-plugin-framework exists, we want to replace the /plugin folder that was placed in the root of Profile POC.

Changes:

• removed /plugin directory
• added @edx/frontend-plugin-framework#{open_PR_branch} to package.json

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (f03d5af) 63.66% compared to head (d598cf1) 63.66%.
Report is 4 commits behind head on aperture/PluginPOCFeature.

Additional details and impacted files

@@                    Coverage Diff                     @@
##           aperture/PluginPOCFeature     #909   +/-   ##
==========================================================
  Coverage                      63.66%   63.66%           
==========================================================
  Files                             54       54           
  Lines                            856      856           
  Branches                         161      161           
==========================================================
  Hits                             545      545           
  Misses                           301      301           
  Partials                          10       10           

Files	Coverage Δ
src/profile/ProfilePluginPage.jsx	0.00% <ø> (ø)
src/index.jsx	0.00% <0.00%> (ø)

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[justinhynes]

Hi @jsnwesson,

This has been open since November. Is this PR still needed? Should someone on the team be reviewing it? If not, can we close it? Or make it a draft?

[jsnwesson]

@justinhynes thanks for bringing this up! Nope, it can be closed since we're not continuing with the PluginPOC feature branch for the time being. I'll close it out.