feat(volo-thrift): support shmipc for pingpong transport

[yukiiiteru]

Motivation

Introduce ShmIPC

---

Note

Introduces optional ShmIPC support in volo-thrift ping-pong transport and wires it through codec, client, and server paths.

• Adds shmipc feature and shmipc_helper plumbing to Encoder/Decoder and default codec for managing reuse/close semantics
• Updates ping-pong client/server/transport to reuse/close via ShmIPC; guards against multiplex over ShmIPC and returns an error if attempted
• Extends server accept loop to reject multiplex when peer is ShmIPC; adds close guards on ShmIPC connections
• Adds examples binaries: shmipc-thrift-server and shmipc-thrift-client gated by shmipc
• Bumps versions: volo to 0.12.2, volo-grpc to 0.12.2, volo-http to 0.5.3, volo-thrift to 0.12.1; aligns dependencies
• Minor: switch some logs to tracing::trace/warn/debug; fix Address hash discriminator for Shmipc

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.28%. Comparing base (5fdef10) to head (17cb563).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
volo-thrift/src/codec/default/mod.rs	0.00%	6 Missing ⚠️
...-thrift/src/transport/pingpong/thrift_transport.rs	0.00%	2 Missing ⚠️
volo-thrift/src/transport/pingpong/server.rs	0.00%	1 Missing ⚠️

❌ Your patch status has failed because the patch coverage (0.00%) is below the target coverage (70.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #634      +/-   ##
==========================================
- Coverage   43.44%   43.28%   -0.16%     
==========================================
  Files         160      160              
  Lines       19383    19441      +58     
==========================================
- Hits         8421     8416       -5     
- Misses      10962    11025      +63     

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[PureWhiteWu]

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[cursor]

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