Improve trickle-ice: start/stop, DataChannel, ICE logs

[SunofCoder]

Added start/stop buttons for DataChannel

• Improved logging for ICE connection states
• Fixed DataChannel send errors on stop
• Updated frontend UI with timestamps and styles

How to test:

1. Run go run main.go in examples/trickle-ice
2. Open http://localhost:8080
3. Start/stop DataChannel and observe ICE state changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.05%. Comparing base (a4c8b34) to head (27a8f9b).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3258      +/-   ##
==========================================
+ Coverage   84.02%   84.05%   +0.02%     
==========================================
  Files          80       80              
  Lines        9041     9041              
==========================================
+ Hits         7597     7599       +2     
+ Misses       1024     1022       -2     
  Partials      420      420              

Flag	Coverage Δ
go	84.05% <ø> (+0.02%)	⬆️

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[JoeTurki]

looks good, sorry this took too long, will need to fix the lint and rebase (i can get to do that once i have free time).
thank you again.