T5261: Add AWS load-balancing tunnel handler

[sever-sever]

Change Summary

Add AWS load-balancing tunnel handler
https://aws.amazon.com/blogs/networking-and-content-delivery/how-to-integrate-linux-instances-with-aws-gateway-load-balancer/

Related PR

vyos/vyos-build#356

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T5261

Component(s) name

Proposed changes

How to test

set service aws glb interfaces gwlb1 eni-id 'id-one'
set service aws glb interfaces gwlb2 eni-id 'id-second'
set service aws glb status format 'simple'
set service aws glb status port '8282'
set service aws glb timeout '3600'

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

[sever-sever]

Will add an updated PR