feat: use protobuf messages for double echo

[atanmarko]

Description

For double echo protocol, use protobuf message definitions and serialize messages using using grpc serialization instead of bincode.

Fixes TP-108

Additions and Changes

• Changed NetworkMessage
• Removed TceCommands from topos-tce-transport
• Double echo proto messages and conversions defined in topos-tce-api
• ValidatorId moved to topos-crypto

PR Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added or updated tests that comprehensively prove my change is effective or that my feature works

[codecov]

Codecov Report

Attention: 44 lines in your changes are missing coverage. Please review.

Comparison is base (bc5b48e) 60.45% compared to head (4758934) 60.52%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #364      +/-   ##
==========================================
+ Coverage   60.45%   60.52%   +0.06%     
==========================================
  Files         230      232       +2     
  Lines       12013    12132     +119     
==========================================
+ Hits         7263     7343      +80     
- Misses       4750     4789      +39     

Files	Coverage Δ
crates/topos-api/build.rs	100.00% <100.00%> (ø)
...os-api/src/grpc/conversions/shared/v1/signature.rs	100.00% <100.00%> (ø)
crates/topos-api/src/grpc/mod.rs	75.00% <ø> (ø)
crates/topos-core/src/types.rs	100.00% <ø> (+2.98%)	⬆️
crates/topos-crypto/src/lib.rs	50.00% <ø> (ø)
crates/topos-crypto/src/messages.rs	93.10% <ø> (ø)
crates/topos-tce-broadcast/src/tests/mod.rs	100.00% <100.00%> (ø)
crates/topos-tce-transport/src/lib.rs	23.52% <ø> (-4.25%)	⬇️
crates/topos-tce/src/app_context/protocol.rs	77.41% <100.00%> (+3.34%)	⬆️
crates/topos-tce/src/lib.rs	0.00% <ø> (ø)
... and 5 more

... and 1 file with indirect coverage changes

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[Freyskeyd]

Some little updates need to be made but LGTM overall