feat(core): add support for dependsOn on input (#3610)

[fhussonnois]

This commits adds:

• support for dependsOn field in flow's inputs
• support for expression on input of type SELECT, MULTISELECT
• new REST API to validate inputs for an execution
• some code cleanup, and method renaming

Fix: #3610

[sonarcloud]

Quality Gate passed

Issues
20 New issues
0 Accepted issues

Measures
0 Security Hotspots
83.8% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[anna-geller]

LGTM 🚀

Can you add some flow examples so we can document it the right way?

[fhussonnois]

@anna-geller : here is the example :

id: example_conditional_inputs
namespace: io.kestra
inputs:
  - id: "cloud_providers"
    type: SELECT
    expression: "{{ kv('cloud_providers') }}"

  - id: "aws_credential"
    type: SELECT
    values:
      - ENV
      - SECRETS
    dependsOn: 
      inputs: [ cloud_providers ]
      condition: "{{ inputs.cloud_providers equals 'AWS' }}"

  - id: "aws_access_key"
    type: STRING
    dependsOn: 
      inputs: [ aws_credential ]
      condition: "{{ inputs.aws_credential equals 'SECRETS' }}"

  - id: "aws_secret_key"
    type: STRING
    dependsOn: 
      inputs: [ aws_credential ]
      condition: "{{ inputs.aws_credential equals 'SECRETS' }}"

  - id: "azure_connection"
    type: STRING
    dependsOn: 
      inputs: [ cloud_providers ]
      condition: "{{ inputs.cloud_providers equals 'AZURE' }}"

tasks:
  - id: data
    type: io.kestra.plugin.core.debug.Return
    format: "SUCCESS"
    allowFailure: true

  - id: pause
    type: io.kestra.plugin.core.flow.Pause
    onResume:
      - id: "s3-bucket"
        type: STRING
        required: true
        dependsOn:
         inputs:
            - "cloud_provider"
         condition: "{{ outputs.data.value equals 'SUCCESS' }}"