#91: Rename source class and fix pattern class.

docs/content/developer-documentation.rst

...atterns_ds/src/Plugin/UiPatterns/Source/DsFieldSource.php

...ds/src/Plugin/UiPatterns/Source/DsFieldTemplateSource.php

...ugin/field_group/FieldGroupFormatter/PatternFormatter.php

...patterns_test/src/Plugin/UiPatterns/Source/TestSource.php

...rns_views/src/Plugin/UiPatterns/Source/ViewsRowSource.php

src/Definition/PatternDefinition.php

src/Definition/PatternSourceField.php

src/Form/PatternDisplayFormTrait.php

src/Plugin/DataType/SourceField.php

src/Plugin/DataType/SourceFieldDefinition.php

src/Plugin/PatternSourceBase.php

src/Plugin/PatternSourceInterface.php

src/Plugin/UiPatterns/Source/FieldSource.php

src/UiPatternBase.php

src/UiPatternsManager.php

src/UiPatternsSourceManager.php

tests/src/Kernel/UiPatternsManagerTest.php

tests/src/Kernel/UiPatternsSourceManagerTest.php