OP#242 separate service into smaller services

libs/askar/src/agent.utils.ts

libs/askar/src/askar-nats/agent.consumer.service.ts

libs/askar/src/askar-nats/askar.nats.module.ts

libs/askar/src/askar-nats/event.handler.service.ts

libs/askar/src/askar-rest/askar.rest.module.ts

libs/askar/src/askar-rest/rest.controller.ts

libs/askar/src/askar/agent.anoncreds.service.ts

libs/askar/src/askar/agent.basicMessages.service.ts

libs/askar/src/askar/agent.connections.service.ts

libs/askar/src/askar/agent.credentials.service.ts

libs/askar/src/askar/agent.dids.service.ts

libs/askar/src/askar/agent.jsonld.service.ts

libs/askar/src/askar/agent.oob.service.ts

libs/askar/src/askar/agent.proofs.service.ts

libs/askar/src/askar/agent.service.ts

libs/askar/src/askar/askar.module.ts

libs/askar/src/index.ts