Add ability to stop running task

[RomanNikitenko]

What does this PR do?

Add ability to stop che task by sending ctrl+c to the corresponding terminal.
User can use Terminal => Terminate Task action or close the corresponding terminal tab.

See the video https://youtu.be/9u71j-Etg04

Please note there is the issue eclipse-che/che#14887 related to terminal widgets when task is completed or interrupted.

What issues does this PR fix or reference?

eclipse-che/che#13737

How to test

1. Start any workspace with che tasks, you can use the devfile as example:

Devfile

apiVersion: 1.0.0
metadata:
 name: wksp-stop-tasks
projects:
  - name: che-theia
    source:
      type: git
      location: 'https://github.com/eclipse/che-theia.git'
  - name: theia
    source:
      type: git
      location: 'https://github.com/theia-ide/theia.git'
components:
  - 
    alias: che-dev
    type: dockerimage
    image: eclipse/che-theia-dev:next
    mountSources: true
    endpoints:
      - name: "theia-dev"
        port: 3130
        attributes:
          protocol: tcp
          public: 'true'
    memoryLimit: 4Gi
  - 
    alias: theia-editor
    reference: >-
      https://raw.githubusercontent.com/RomanNikitenko/che-plugin-registry/master/v3/plugins/eclipse/che-theia/custom/meta.yaml
    type: cheEditor
  
commands:
- name: theia:build
  actions:
  - type: exec
    component: che-dev
    command: >
              yarn
    workdir: /projects/theia

- name: che-theia:build
  actions:
  - type: exec
    component: che-dev
    command: >
              yarn
    workdir: /projects/che-theia

- name: test task
  actions:
  - type: exec
    component: che-dev
    command: >
              sleep 30 && echo test task is completed
    workdir: /projects/che-theia/plugins/task-plugin

The devfile contains the reference for docker image: maxura/che-theia:489 related to the PR

2. Try to use Terminal => Terminate Task action or closing of the corresponding terminal tab to interrupt a task.
3. Please try to stop a task after page refreshing.
4. Note that there is the issue Sending Ctrl+C to one terminal widget kills all terminals  che#14887 related to terminal widgets when task is completed or interrupted.

Changelog

Add ability to stop che task by sending ctrl+c to the corresponding terminal.

Release Notes

Docs PR

Signed-off-by: Roman Nikitenko rnikiten@redhat.com

[che-bot]

E2E Happy path tests of Eclipse Che Single User on K8S (minikube v1.1.1) has failed:

• build details
• test report
• logs and configs
• "che-theia" docker image: maxura/che-theia:489
• "che-theia-endpoint-runtime" docker image: maxura/che-theia-endpoint-runtime:489
• "che-remote-plugin-runner-java8" docker image: maxura/che-remote-plugin-runner-java8:489
• "che-remote-plugin-kubernetes-tooling-1.0.0" docker image: maxura/che-remote-plugin-kubernetes-tooling-1.0.0:489
• Happy path tests DevFile
• https://github.com/orgs/eclipse/teams/eclipse-che-qa please check this report.
  Use command "crw-ci-test" to rerun the test.

[che-bot]

E2E Happy path tests of Eclipse Che Single User on K8S (minikube v1.1.1) has failed:

• build details
• test report
• logs and configs
• "che-theia" docker image: maxura/che-theia:489
• "che-theia-endpoint-runtime" docker image: maxura/che-theia-endpoint-runtime:489
• "che-remote-plugin-runner-java8" docker image: maxura/che-remote-plugin-runner-java8:489
• "che-remote-plugin-kubernetes-tooling-1.0.0" docker image: maxura/che-remote-plugin-kubernetes-tooling-1.0.0:489
• Happy path tests DevFile
• https://github.com/orgs/eclipse/teams/eclipse-che-qa please check this report.
  Use command "crw-ci-test" to rerun the test.

[che-bot]

E2E Happy path tests of Eclipse Che Single User on K8S (minikube v1.1.1) has failed:

• build details
• test report
• logs and configs
• "che-theia" docker image: maxura/che-theia:489
• "che-theia-endpoint-runtime" docker image: maxura/che-theia-endpoint-runtime:489
• "che-remote-plugin-runner-java8" docker image: maxura/che-remote-plugin-runner-java8:489
• "che-remote-plugin-kubernetes-tooling-1.0.0" docker image: maxura/che-remote-plugin-kubernetes-tooling-1.0.0:489
• Happy path tests DevFile
• https://github.com/orgs/eclipse/teams/eclipse-che-qa please check this report.
  Use command "crw-ci-test" to rerun the test.

[che-bot]

E2E Happy path tests of Eclipse Che Single User on K8S (minikube v1.1.1) has been successful:

• build details
• logs and configs
• "che-theia" docker image: maxura/che-theia:489
• "che-theia-endpoint-runtime" docker image: maxura/che-theia-endpoint-runtime:489
• "che-remote-plugin-runner-java8" docker image: maxura/che-remote-plugin-runner-java8:489
• "che-remote-plugin-kubernetes-tooling-1.0.0" docker image: maxura/che-remote-plugin-kubernetes-tooling-1.0.0:489
• Happy path tests DevFile

[AndrienkoAleksandr]

Tested, works good.