feat: rest agent support for connection and proof change state events

.env.example

compose/docker-compose.simple.yml

compose/env/holder.simple.env

compose/env/issuer.simple.env

libs/askar/src/agent.utils.ts

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

libs/askar/src/askar-rest/auth/basic.guard.ts

libs/askar/src/askar-rest/auth/basic.middleware.ts

libs/askar/src/askar-rest/auth/basic.strategy.ts

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

libs/askar/src/askar/agent.event.listener.servce.ts

libs/config/src/config/agent.config.ts

libs/config/src/interfaces/agent.config.interface.ts

libs/config/src/schemas/agent.schema.ts

package.json

yarn.lock