Enhance frontend performance: dynamic library imports & improved route-based code splitting

[Pierre-Gilles]

Pull Request check-list

To ensure your Pull Request can be accepted as fast as possible, make sure to review and check all of these items:

• If your changes affects code, did your write the tests?
• Are tests passing? (npm test on both front/server)
• Is the linter passing? (npm run eslint on both front/server)
• Did you run prettier? (npm run prettier on both front/server)
• If you are adding a new features/services, did you run integration comparator? (npm run compare-translations on front)
• Did you test this pull request in real life? With real devices? If this development is a big feature or a new service, we recommend that you provide a Docker image to the community (french forum/english forum) for testing before merging.
• If your changes modify the API (REST or Node.js), did you modify the API documentation? (Documentation is based on comments in code)
• If you are adding a new features/services which needs explanation, did you modify the user documentation? See the GitHub repo and the website.
• Did you add fake requests data for the demo mode (front/src/config/demo.js) so that the demo website is working without a backend? (if needed) See https://demo.gladysassistant.com.

NOTE: these things are not required to open a PR and can be done afterwards / while the PR is open.

Description of change

Please provide a description of the change here. It's always best with screenshots, so don't hesitate to add some!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.59%. Comparing base (cdb7893) to head (6dd14a0).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2259   +/-   ##
=======================================
  Coverage   98.59%   98.59%           
=======================================
  Files         884      884           
  Lines       14683    14683           
=======================================
  Hits        14476    14476           
  Misses        207      207           

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[cloudflare-workers-and-pages]

Deploying gladys-plus with    Cloudflare Pages

Latest commit:	6dd14a0
Status:	✅  Deploy successful!
Preview URL:	https://7fcec055.gladys-plus.pages.dev
Branch Preview URL:	https://dynamically-import-librairie.gladys-plus.pages.dev

View logs

[relativeci]

#3118 Bundle Size — 11.74MiB (+9.47%).

6dd14a0(current) vs cdb7893 master#3109(baseline)

Warning

Bundle contains 2 duplicate packages – View duplicate packages

Bundle metrics   8 changes 1 regression 2 improvements

	Current #3118	Baseline #3109
Initial JS	1.56MiB(-73.5%)	5.88MiB
Initial CSS	261.41KiB(-14.35%)	305.21KiB
Cache Invalidation	74.38%	54.74%
Chunks	228(+347.06%)	51
Assets	470(+171.68%)	173
Modules	2057(+29.45%)	1589
Duplicate Modules	489(+2228.57%)	21
Duplicate Code	10.81%(+1128.41%)	0.88%
Packages	136	136
Duplicate Packages	2	2

Bundle size by type   3 changes 3 regressions

	Current #3118	Baseline #3109
JS	8.72MiB (+12.69%)	7.74MiB
IMG	2.54MiB	2.54MiB
CSS	326.36KiB (+1.02%)	323.06KiB
Fonts	93.55KiB	93.55KiB
Other	48.9KiB (+167.22%)	18.3KiB
HTML	13.58KiB	13.58KiB

Bundle analysis report Branch dynamically-import-librairies Project dashboard

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