feat(web): use code splitting

[alcercu]

PR-Codex overview

The focus of this PR is to add a loading spinner component to display during lazy loading of pages.

Detailed summary

• Added a loading spinner component Loading
• Implemented lazy loading with Suspense for all page components
• Updated import paths for NewDisputeProvider and page components

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[codeclimate[bot]]

Code Climate has analyzed commit deee2a30 and detected 6 issues on this pull request.

Here's the issue category breakdown:

Category	Count
Complexity	1
Duplication	5

View more on Code Climate.

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud