GH-57 Delegate Template Parameter creation to Method Handlers

[kdavisk6]

Related to #57

This change moves TemplateParameter object creation to AbstractTargetMethodHandler to reduce the overhead of Contract parsing and reduce the responsibility of Contract implementations to class metadata and not collaborating object construction.

[codecov]

Codecov Report

Merging #66 (76f1cbc) into main (503eaf3) will decrease coverage by 0.20%.
The diff coverage is 91.37%.

@@             Coverage Diff              @@
##               main      #66      +/-   ##
============================================
- Coverage     93.24%   93.03%   -0.21%     
- Complexity      667      676       +9     
============================================
  Files            76       76              
  Lines          1747     1781      +34     
  Branches        187      189       +2     
============================================
+ Hits           1629     1657      +28     
- Misses           66       73       +7     
+ Partials         52       51       -1     

Impacted Files	Coverage Δ	Complexity Δ
...ign/template/expander/CachingExpanderRegistry.java	91.30% <83.33%> (-8.70%)	12.00 <5.00> (+4.00)	⬇️
...n/java/feign/impl/AbstractTargetMethodHandler.java	97.27% <88.88%> (-1.68%)	33.00 <7.00> (+4.00)	⬇️
...in/java/feign/TargetMethodParameterDefinition.java	97.61% <92.30%> (+0.64%)	16.00 <3.00> (+5.00)
...re/src/main/java/feign/TargetMethodDefinition.java	95.16% <100.00%> (ø)	30.00 <0.00> (ø)
...ign/contract/AbstractAnnotationDrivenContract.java	97.05% <100.00%> (ø)	9.00 <0.00> (ø)
...re/src/main/java/feign/contract/FeignContract.java	97.10% <100.00%> (+0.13%)	19.00 <1.00> (-3.00)	⬆️
...n/java/feign/template/SimpleTemplateParameter.java	66.66% <0.00%> (-11.12%)	5.00% <0.00%> (-1.00%)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 503eaf3...76f1cbc. Read the comment docs.