Add waiting rooms and status displays

[dabb1e]

Add waiting room functionality and transfer status displays via boss bars.

[codecov]

Codecov Report

Attention: Patch coverage is 14.72868% with 110 lines in your changes missing coverage. Please review.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...otlin/club/arson/impulse/TransferStatusListener.kt	0.00%	87 Missing ⚠️
...tlin/club/arson/impulse/PlayerLifecycleListener.kt	51.42%	17 Missing ⚠️
app/src/main/kotlin/club/arson/impulse/Impulse.kt	0.00%	3 Missing ⚠️
.../kotlin/club/arson/impulse/config/ConfigManager.kt	0.00%	3 Missing ⚠️

Flag	Coverage Δ	Complexity Δ
unittests	42.87% <14.72%> (-5.29%)	130.00 <3.00> (+2.00)	⬇️

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Files with missing lines	Coverage Δ	Complexity Δ
...rc/main/kotlin/club/arson/impulse/server/Server.kt	80.39% <100.00%> (+0.19%)	38.00 <0.00> (ø)
app/src/main/kotlin/club/arson/impulse/Impulse.kt	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
.../kotlin/club/arson/impulse/config/ConfigManager.kt	52.08% <0.00%> (-1.11%)	13.00 <0.00> (ø)
...tlin/club/arson/impulse/PlayerLifecycleListener.kt	68.13% <51.42%> (-11.18%)	24.00 <3.00> (+2.00)	⬇️
...otlin/club/arson/impulse/TransferStatusListener.kt	0.00% <0.00%> (ø)	0.00 <0.00> (?)

Components	Coverage Δ
API	∅ <ø> (∅)
App	42.87% <14.72%> (-5.29%)	⬇️
Docker Broker	∅ <ø> (∅)
Command Broker	∅ <ø> (∅)