feat: replaced @edx/frontend-build to use openedx namespace

[BilalQamar95]

Description

Part of openedx/axim-engineering#23

• Replaced packages @edx/frontend-build to use openedx namespace, updated respective imports
• Major version upgrade for frontend-build to v14
• frontend-platform peerDependency updated

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.98%. Comparing base (aa19c62) to head (ae464b5).
Report is 19 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #134      +/-   ##
==========================================
+ Coverage   91.23%   94.98%   +3.75%     
==========================================
  Files          91       91              
  Lines        1711     1736      +25     
  Branches      407      415       +8     
==========================================
+ Hits         1561     1649      +88     
+ Misses        147       86      -61     
+ Partials        3        1       -2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.