Chore: Replace relative imports with absoute imports

[TeddyRoncin]

@/ suffix represents the src/ root directory.
#/ suffix represents the test/ root directory.
Added the eslint plugin importPlugin for import order (but disable for now, because ESLint 10 is not yet supported, see import-js/eslint-plugin-import#3230)

[codecov]

Codecov Report

❌ Patch coverage is 98.38473% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.02%. Comparing base (81ed2cf) to head (8f2b37e).

Files with missing lines	Patch %	Lines
src/main.ts	0.00%	3 Missing ⚠️
src/config/config.service.ts	0.00%	0 Missing and 2 partials ⚠️
test/e2e/branch/get-branches.e2e-spec.ts	0.00%	2 Missing ⚠️
...st/e2e/ue/credit/get-credit-categories.e2e-spec.ts	0.00%	2 Missing ⚠️
test/e2e/branch/index.ts	0.00%	1 Missing ⚠️
test/e2e/ue/credit/index.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #126      +/-   ##
==========================================
+ Coverage   79.21%   86.02%   +6.81%     
==========================================
  Files          98      195      +97     
  Lines        2314     5211    +2897     
  Branches      412      499      +87     
==========================================
+ Hits         1833     4483    +2650     
- Misses        354      567     +213     
- Partials      127      161      +34     

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[TeddyRoncin]

@AlbanSdl oskour, ya 3 tests qui marchent pas 😭

[TeddyRoncin]

Merde non pas celle là, je te reping sur la bonne