Unit tests, Docker integration tests, additional serialization coverage, and proc_macro support for reply port type args

[slawlor]

This PR adds a few things

1. Some initial docker-based, networked e2e integration tests to simulate a real cluster
2. More unit tests on port handling + serialization/deserialization of ractor_cluster messages
3. Missing serialization support for more basic types (char and bool) along with vectors of all supported types (numerics, String, char, bool, etc)
4. Fix in proc macro to return all of the generics on an RpcReplyPort when possible. This allows for complex nested types to the port to be reply types.

[codecov]

Codecov Report

Base: 87.98% // Head: 71.46% // Decreases project coverage by -16.53% ⚠️

Coverage data is based on head (478c1ec) compared to base (3031d3d).
Patch coverage: 90.03% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #39       +/-   ##
===========================================
- Coverage   87.98%   71.46%   -16.53%     
===========================================
  Files          27       40       +13     
  Lines        3586     5729     +2143     
===========================================
+ Hits         3155     4094      +939     
- Misses        431     1635     +1204     

Impacted Files	Coverage Δ
ractor/src/port/mod.rs	95.45% <0.00%> (-4.55%)	⬇️
ractor_cluster/src/net/listener.rs	0.00% <ø> (ø)
ractor_cluster/src/net/session.rs	0.00% <0.00%> (ø)
ractor_cluster/src/node/client.rs	0.00% <0.00%> (ø)
ractor_cluster/src/node/mod.rs	3.89% <0.00%> (ø)
ractor_cluster/src/node/node_session/mod.rs	13.29% <0.00%> (ø)
ractor_cluster/src/remote_actor/mod.rs	0.00% <0.00%> (ø)
ractor_cluster_derive/src/lib.rs	96.93% <87.50%> (ø)
ractor_cluster/src/node/node_session/tests.rs	90.17% <90.17%> (ø)
ractor_cluster/src/node/auth.rs	92.89% <98.60%> (ø)
... and 17 more

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