!refactor(backend): restructure user endpoints

[matmair]

This realigns the user API endpoints by:

• moving endpoints that only return results for the current user to /user/me/
• renaming the list endpoint for tokens from 'tokens' to 'token' as that name is now free

THIS IS BREAKING, do not merge for 1.0

[netlify]

✅ Deploy Preview for inventree-web-pui-preview ready!

Name	Link
🔨 Latest commit	ca39264
🔍 Latest deploy log	https://app.netlify.com/sites/inventree-web-pui-preview/deploys/680ff6eb261b5500083ea9ab
😎 Deploy Preview	https://deploy-preview-9604--inventree-web-pui-preview.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 95 (🔴 down 1 from production) Accessibility: 89 (no change from production) Best Practices: 100 (no change from production) SEO: 78 (no change from production) PWA: - View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.36%. Comparing base (cee679d) to head (ca39264).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #9604   +/-   ##
=======================================
  Coverage   86.36%   86.36%           
=======================================
  Files        1229     1229           
  Lines       53952    53952           
  Branches     2260     2260           
=======================================
+ Hits        46593    46596    +3     
+ Misses       6787     6784    -3     
  Partials      572      572           

Flag	Coverage Δ
backend	88.32% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.