Support UI listening on mutliple addresses.

[yuchenshi]

Description

This makes the Emulator UI listen on multiple addresses (v4 and v6) if possible.

Scenarios Tested

Started the UI, clicked things around.

Sample Commands

[codecov-commenter]

Codecov Report

Base: 56.05% // Head: 56.06% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (cd0f3d5) compared to base (70180c9).
Patch coverage: 75.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5088   +/-   ##
=======================================
  Coverage   56.05%   56.06%           
=======================================
  Files         307      307           
  Lines       20634    20635    +1     
  Branches     4166     4166           
=======================================
+ Hits        11566    11568    +2     
+ Misses       8067     8066    -1     
  Partials     1001     1001           

Impacted Files	Coverage Δ
src/emulator/controller.ts	13.25% <0.00%> (+0.03%)	⬆️
src/emulator/downloadableEmulators.ts	23.30% <ø> (ø)
src/emulator/hub.ts	16.49% <0.00%> (ø)
src/emulator/portUtils.ts	52.10% <ø> (ø)
src/emulator/ui.ts	38.09% <66.66%> (+3.09%)	⬆️
src/emulator/ExpressBasedEmulator.ts	75.51% <100.00%> (+0.51%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.