Add Composition generic state

src/app/core/stores/composition/composition-action.helper.ts

...pp/core/stores/composition/composition-namespace.model.ts

src/app/core/stores/composition/composition.action.ts

src/app/core/stores/composition/composition.state.ts

...stores/relation-2-tiers/relation-2-tiers-action.helper.ts

...ores/relation-2-tiers/relation-2-tiers-namespace.model.ts

...p/core/stores/relation-2-tiers/relation-2-tiers.action.ts

...pp/core/stores/relation-2-tiers/relation-2-tiers.state.ts

...stores/relation-3-tiers/relation-3-tiers-action.helper.ts

...ores/relation-3-tiers/relation-3-tiers-namespace.model.ts

...p/core/stores/relation-3-tiers/relation-3-tiers.action.ts

...pp/core/stores/relation-3-tiers/relation-3-tiers.state.ts

...d/stores/organizational-unit/organizational-unit.state.ts

...on-policy/organizational-unit-submission-policy.action.ts

...ion-policy/organizational-unit-submission-policy.state.ts