feat: allow runtime configuration

[dcoa]

Description

This PR is part of the work to make it possible to configure the frontend applications at runtime (you can referer to this openedx/wg-frontend#103).

Changes

• Update frontend-platform to version > 2.5.1
• Use Helmet library to change the favicon in runtime.

Screenshot

Values come from runtime configuration

How to test

• To allow runtime configuration set a new environment variables MFE_CONFIG_API_URL and APP_ID in the env file and add the api url ( To test this you can use the API from this feat: add mfe config api edx-platform#30473 or use an external tool to mock the API response).
• The API should respond with a JSON with the config values, something like:

{
  "SITE_NAME": "Test Site",
  "LOGO_URL": "https://testimage.com/logo.svg",
  "LOGO_TRADEMARK_URL": "https://testimage.com/logo.svg",
  "LOGO_WHITE_URL": "https://testimage.com/logo.svg",
  "FAVICON_URL": "https://testimage.com/favicon.ico",
}

• The initialize process should work normally.
  Note: You can combine buildtime and runtime configuration

[openedx-webhooks]

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[arbrandes]

@muselesscreator, @leangseu-edx, can you help us find a pair of eyes to review this one? There's a time component: we want to get this MFE into Tutor/Olive, and to do so we need to have the dynamic configuration support this PR provides merged in the next 2 weeks, give or take. Thanks!

[codecov-commenter]

Codecov Report

Merging #144 (c0f2445) into master (b1d1111) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #144   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          109       111    +2     
  Lines         1077      1081    +4     
  Branches       158       158           
=========================================
+ Hits          1077      1081    +4     

Impacted Files	Coverage Δ
src/App.jsx	100.00% <ø> (ø)
src/components/Head/index.jsx	100.00% <100.00%> (ø)
src/components/Head/messages.js	100.00% <100.00%> (ø)

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[leangseu-edx]

I made some change for testing and add it to this branch https://github.com/edx/frontend-app-ora-grading/tree/dcoa/allow-runtime-config because I don't have permission to overwriting this.

[dcoa]

I made some change for testing and add it to this branch https://github.com/edx/frontend-app-ora-grading/tree/dcoa/allow-runtime-config because I don't have permission to overwriting this.

Thanks for your help, I integrated the changes.

[arbrandes]

Thanks a bunch, @leangseu-edx!