Add support for multi connection WS

[msivasubramaniaan]

This PR supports multi connection establishment of the workspace
Ref: https://issues.redhat.com/browse/CRW-5773

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 0.00%. Comparing base (71098f6) to head (65b6f4d).
⚠️ Report is 231 commits behind head on main.

Files with missing lines	Patch %	Lines
...com/redhat/devtools/gateway/DevSpacesConnection.kt	0.00%	8 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #188     +/-   ##
=======================================
  Coverage   0.00%   0.00%             
=======================================
  Files          4      31     +27     
  Lines         26    1061   +1035     
  Branches       0     175    +175     
=======================================
- Misses        26    1061   +1035     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[azatsarynnyy]

I tested both cases:

• connecting from the Dashboard
• connecting from the Gateway application

Both work like a charm.
Thanks @msivasubramaniaan!