Host param

[grumpyp]

I need to change the Socket Binding of the underlying Uvicorn, which right now isn't possible.
I added a parameter to LitServer.run to basically use :: there.

The feature request came up by working with a Cloud provider which needs to listen to all available IPv6 interfaces.

• Was this discussed/agreed via a Github issue? (no need for typos and docs improvements)
• Discussed with @aniketmaurya on Discord
• Did you read the contributor guideline, Pull Request section?
• Did you make sure to update the docs?
• needs an update here https://lightning.ai/docs/litserve/api-reference/litserver
• Did you write any new necessary tests?
• shouldn't be needed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96%. Comparing base (477d02a) to head (f2e68b1).
Report is 1 commits behind head on main.

Additional details and impacted files

@@         Coverage Diff         @@
##           main   #335   +/-   ##
===================================
  Coverage    96%    96%           
===================================
  Files        22     22           
  Lines      1391   1394    +3     
===================================
+ Hits       1331   1334    +3     
  Misses       60     60           

[aniketmaurya]

Looks great @grumpyp! Could you add a test please?