Add topic scoring & reduce pubsub spam

[Stebalien]

1. Add topic scoring to both the GPBFT topic and the manifest topic.
2. Use hashing for message IDs in the manifest network and increase the rebroadcast time.
3. In the manifest validator, drop messages with old sequence numbers.

[Stebalien]

Bump the pubsub topic versions at the same time?

[github-actions]

Fuzz test failed on commit 9bdf53b. To troubleshoot locally, download the seed corpus using GitHub CLI by running:

gh run download 10393399687 -n testdata

Alternatively, download directly from here.

[codecov]

Codecov Report

Attention: Patch coverage is 46.51163% with 23 lines in your changes missing coverage. Please review.

Project coverage is 79.75%. Comparing base (4db84c3) to head (bfc8af6).
Report is 2 commits behind head on main.

Files	Patch %	Lines
internal/psutil/psutil.go	19.23%	16 Missing and 5 partials ⚠️
manifest/dynamic_manifest_provider.go	80.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #573      +/-   ##
==========================================
- Coverage   80.03%   79.75%   -0.28%     
==========================================
  Files          49       50       +1     
  Lines        4492     4525      +33     
==========================================
+ Hits         3595     3609      +14     
- Misses        547      562      +15     
- Partials      350      354       +4     

Files	Coverage Δ
host.go	70.76% <100.00%> (-0.11%)	⬇️
manifest/dynamic_manifest_sender.go	82.25% <100.00%> (ø)
manifest/manifest.go	58.46% <100.00%> (ø)
manifest/dynamic_manifest_provider.go	60.48% <80.00%> (ø)
internal/psutil/psutil.go	19.23% <19.23%> (ø)

... and 2 files with indirect coverage changes

[github-actions]

Fuzz test failed on commit bfc8af6. To troubleshoot locally, download the seed corpus using GitHub CLI by running:

gh run download 10393581939 -n testdata

Alternatively, download directly from here.