AIRO-687 Update ROS topic to SourceDestination_input

[sdiao]

Proposed change(s)

Update the ROS Topic to SourceDestination_input in the Pick and Place Demo. This is to make the rostopic list and validation message returns the same topic name.

Useful links (GitHub issues, JIRA tickets, forum threads, etc.)

Original discussion in:
#224 (comment)
#224 (comment)

Types of change(s)

• Bug fix
• New feature
• Code refactor
• Documentation update
• Other (please describe)

Testing and Verification

Tested with the pick and place quick demo. On ROS side, I verified that rostopic list returns SourceDestination_input instead of SourceDestination

Test Configuration:

• Unity Version: Unity 2020.2.4f1
• Unity machine OS + version: macOs BigSur
• ROS machine OS + version: ROS melodic
• ROS–Unity communication: Docker

Checklist

• Ensured this PR is up-to-date with the dev branch
• Created this PR to target the dev branch
• Followed the style guidelines as described in the Contribution Guidelines
• Added tests that prove my fix is effective or that my feature works - Manual test
• Updated the Changelog and described changes in the Unreleased section
• Updated the documentation as appropriate

Other comments