feat(core): afterExecution tasks

[loicmathieu]

Fixes https://github.com/kestra-io/kestra-ee/issues/2792

Example:

id: lapwing_452757
namespace: company.team

tasks:
  - id: hello
    type: io.kestra.plugin.core.log.Log
    message: Hello World! 🚀

afterExecution:
  - id: end
    type: io.kestra.plugin.core.log.Log
    message: I'm ended in {{execution.state}}

[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
96.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud