Adding indexes for project/user

[dmetzner]

Should increase query performance ;)

[codecov]

Codecov Report

Merging #3752 (0289f4b) into develop (8dd3030) will increase coverage by 3.29%.
The diff coverage is 44.44%.

❗ Current head 0289f4b differs from pull request most recent head 33eeaab. Consider uploading reports for the commit 33eeaab to get more accurate results

@@              Coverage Diff              @@
##             develop    #3752      +/-   ##
=============================================
+ Coverage      46.86%   50.15%   +3.29%     
  Complexity      5694     5694              
=============================================
  Files            655      655              
  Lines          20361    20367       +6     
=============================================
+ Hits            9542    10215     +673     
+ Misses         10819    10152     -667     

Flag	Coverage Δ
behat	47.97% <44.44%> (+4.20%)	⬆️
phpunit	8.76% <0.00%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
src/Api_deprecated/OAuth/OAuthService.php	1.44% <0.00%> (+0.02%)	⬆️
src/DB/Entity/Project/Extension.php	45.45% <ø> (+6.06%)	⬆️
src/DB/Entity/Project/Program.php	80.87% <ø> (ø)
src/DB/Entity/Project/Tag.php	58.62% <ø> (+13.79%)	⬆️
src/DB/Entity/User/User.php	36.17% <ø> (ø)
...ty/Authentication/WebView/WebviewAuthenticator.php	26.92% <0.00%> (-4.90%)	⬇️
.../Api_deprecated/Security/ApiTokenAuthenticator.php	96.66% <100.00%> (+0.51%)	⬆️
src/System/Testing/Behat/ContextTrait.php	75.98% <0.00%> (+0.65%)	⬆️
src/Api/ProjectsApi.php	94.87% <0.00%> (+1.02%)	⬆️
...stem/Testing/Behat/Context/DataFixturesContext.php	88.63% <0.00%> (+1.56%)	⬆️
... and 22 more

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