Plugin Support

...G...... [DEV-4027] added -t and -v flag parsing and logic to do the corresponding actions

Merge in AP/plugin-support from feature/DEV-4027-7.3 to master

* commit 'bff6b8747d087d118af89d860dcdd3e487d4147d':
  ...G...... [DEV-4027] moved no arguments case after usage to get proper usage text
  ...G...... [DEV-4027] removed -p flag from the usage message
  ...G...... [DEV-4027] added help return if no argument provided
  ...G...... [DEV-4027] added an empty line after the result
  ...G...... [DEV-4027] fixed license text
  ...G...... [DEV-4027] Aligned formatting of usage message
  ...G...... [DEV-4027] moved value.go to sdk from agent
  ...G...... [DEV-4027] package keyparser -> package itemutil
  ...G...... [DEV-4027] Linter suggestions and expandArray function rework to remove labeled break
  ...G...... [DEV-4027] Linter suggestions
  ...G...... [DEV-4027] Improved conditional workflow and made general plugin test workflow
  ...G...... [DEV-4027] Improved styling
  ...G...... [DEV-4027] renamed to better package name : keyparser
  ...G...... [DEV-4027] Moved key parsing logic from agent to sdk
  ...G...... [DEV-4027] Add gitignore
  ...G...... [DEV-4027] Linter fixes
  ...G...... [DEV-4027] Added -t and -v flag parsing and logic to do the corresponding actions