Some watcher and offerbook changes.

[Wukong247]

Spawns nostr event propagator in a separate thread and repeat after every 30 minutes. Increase offerbook sync interval and remove wal hack

[codecov]

Codecov Report

❌ Patch coverage is 75.24752% with 25 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.63%. Comparing base (776b75d) to head (a82374f).
⚠️ Report is 69 commits behind head on master.

Files with missing lines	Patch %	Lines
src/maker/server2.rs	80.48%	8 Missing ⚠️
src/maker/server.rs	83.33%	7 Missing ⚠️
src/watch_tower/registry_storage.rs	53.33%	7 Missing ⚠️
src/taker/api2.rs	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #679      +/-   ##
==========================================
+ Coverage   68.87%   77.63%   +8.75%     
==========================================
  Files          35       49      +14     
  Lines        4932    15063   +10131     
==========================================
+ Hits         3397    11694    +8297     
- Misses       1535     3369    +1834     

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[mojoX911]

Ack