feat: separate trait for outbound and inbound messages

[davidsteiner]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 63.15789% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.15%. Comparing base (f5d77ca) to head (e2360c9).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/hotfix/src/initiator.rs	0.00%	6 Missing ⚠️
crates/hotfix/src/transport/socket.rs	0.00%	4 Missing ⚠️
crates/hotfix-web/src/lib.rs	0.00%	3 Missing ⚠️
crates/hotfix-web/src/session_controller.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #261      +/-   ##
==========================================
+ Coverage   86.99%   87.15%   +0.15%     
==========================================
  Files          84       84              
  Lines        7512     7504       -8     
==========================================
+ Hits         6535     6540       +5     
+ Misses        977      964      -13     

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