feat: add registry-level client interceptor support

[aaron-steinfeld]

Description

Previously had to either add it on each registry channel call, or subclass the registry.

Testing

Added UT

Checklist:

• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Merging #42 (89e9b44) into main (04adafb) will decrease coverage by 0.20%.
The diff coverage is 76.47%.

@@             Coverage Diff              @@
##               main      #42      +/-   ##
============================================
- Coverage     73.80%   73.59%   -0.21%     
- Complexity      139      145       +6     
============================================
  Files            19       20       +1     
  Lines           397      409      +12     
  Branches         22       22              
============================================
+ Hits            293      301       +8     
- Misses           82       85       +3     
- Partials         22       23       +1     

Flag	Coverage Δ
unit	73.59% <76.47%> (-0.21%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...race/core/grpcutils/client/GrpcRegistryConfig.java	33.33% <33.33%> (ø)
...grpcutils/client/InProcessGrpcChannelRegistry.java	80.64% <60.00%> (-4.55%)	⬇️
...ace/core/grpcutils/client/GrpcChannelRegistry.java	85.50% <100.00%> (+1.13%)	⬆️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[github-actions]

Unit Test Results

12 files  ±0  12 suites  ±0   16s ⏱️ -3s
70 tests +2  70 ✔️ +2  0 💤 ±0  0 ❌ ±0 

Results for commit 27870c2. ± Comparison against base commit 04adafb.