Create user security read model - clean user domain

[akondas]

better separation of concepts:

• User entity is now clear (without symfony UserInterface)
• Prevent lazy loading domain models in view
• separate user security read model
• fix problem with logout on password change

[codecov]

Codecov Report

Merging #188 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master     #188   +/-   ##
=========================================
  Coverage     99.91%   99.92%           
- Complexity     1303     1330   +27     
=========================================
  Files           218      221    +3     
  Lines          3706     3765   +59     
=========================================
+ Hits           3703     3762   +59     
  Misses            3        3           

Impacted Files	Coverage Δ	Complexity Δ
src/Security/UserChecker.php	100.00% <ø> (ø)	4.00 <0.00> (ø)
src/Controller/OAuth/BitbucketController.php	100.00% <100.00%> (ø)	6.00 <2.00> (ø)
src/Controller/OAuth/GitHubController.php	100.00% <100.00%> (ø)	6.00 <2.00> (ø)
src/Controller/OAuth/GitLabController.php	100.00% <100.00%> (ø)	6.00 <2.00> (ø)
src/Controller/OAuth/OAuthController.php	100.00% <100.00%> (ø)	12.00 <0.00> (ø)
src/Controller/Organization/MembersController.php	100.00% <100.00%> (ø)	14.00 <0.00> (ø)
src/Controller/Organization/PackageController.php	100.00% <100.00%> (ø)	42.00 <34.00> (+1.00)
src/Controller/OrganizationController.php	100.00% <100.00%> (ø)	39.00 <0.00> (ø)
src/Controller/UserController.php	100.00% <100.00%> (ø)	8.00 <0.00> (ø)
src/Entity/User.php	100.00% <100.00%> (ø)	31.00 <3.00> (-10.00)
... and 19 more

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