Support both the Tendermint legacy and v0.33 secret connection handshake

[zmanian]

This pull requests adds support for both the Tendermint legacy secret connection handshake that has a malleability vulnerability and the Tendermint v0.33 handshake that uses a transcript hash to defeat malleability.

[codecov-commenter]

Codecov Report

Merging #58 into develop will increase coverage by 0.10%.
The diff coverage is 46.66%.

@@             Coverage Diff             @@
##           develop      #58      +/-   ##
===========================================
+ Coverage    28.74%   28.85%   +0.10%     
===========================================
  Files           50       50              
  Lines         1816     1837      +21     
===========================================
+ Hits           522      530       +8     
- Misses        1294     1307      +13     

Impacted Files	Coverage Δ
src/config/validator.rs	0.00% <0.00%> (ø)
src/connection/tcp.rs	0.00% <0.00%> (ø)
src/session.rs	0.00% <0.00%> (ø)
src/connection/secret_connection.rs	71.19% <76.47%> (-0.32%)	⬇️
tests/integration.rs	88.68% <100.00%> (ø)

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