PR: Extend LaunchManager for Environments

[tunahanertekin]

🌿 PR: Extend LaunchManager for Environments

Description

LaunchManagers can be used in Environments in cmd mode.

Closes #214

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How can it be tested?

Can be tested by a sample LaunchManager:

apiVersion: robot.roboscale.io/v1alpha1
kind: LaunchManager
metadata:
  name: lm-test
  namespace: test
  labels:
    robolaunch.io/target-robot: test
    robolaunch.io/target-vdi: abc
spec:
  launches:
    something:
      container:
        display: false
        env:
        - name: TEST_ENV
          value: testing
        privileged: false
      entrypoint:
        cmd: |-
          pwd && ls -la && sleep infinity
        disableSourcingWs: true
        type: Custom
      instances:
      - org-development-45679050
      namespacing: false
      scope:
        scopeType: Path
        workspace: /home/robolaunch