Issue #3328272 by Grimreaper, DuaelFr: Group patterns in /patterns and select lists

...erns_library/src/Controller/PatternsLibraryController.php

...tterns_library/templates/patterns-overview-page.html.twig

src/Annotation/UiPattern.php

src/Definition/PatternDefinition.php

src/UiPatternsManager.php

src/UiPatternsManagerInterface.php

...ions_sort_test/templates/patterns/aaa/aaa.ui_patterns.yml

...ns_sort_test/templates/patterns/aaa/pattern-aaa.html.twig

...ions_sort_test/templates/patterns/bbb/bbb.ui_patterns.yml

...ns_sort_test/templates/patterns/bbb/pattern-bbb.html.twig

...ions_sort_test/templates/patterns/ccc/ccc.ui_patterns.yml

...ns_sort_test/templates/patterns/ccc/pattern-ccc.html.twig

...ions_sort_test/templates/patterns/lll/lll.ui_patterns.yml

...ns_sort_test/templates/patterns/lll/pattern-lll.html.twig

...ns_sort_test/templates/patterns/zzz/pattern-zzz.html.twig

...ions_sort_test/templates/patterns/zzz/zzz.ui_patterns.yml

...ions_sort_test/ui_patterns_definitions_sort_test.info.yml

...s/modules/ui_patterns_test/src/DummyUiPatternsManager.php

tests/modules/ui_patterns_test/ui_patterns_test.info.yml

tests/src/Kernel/UiPatternsManagerSortingTest.php