Refactoring interceptor

[noconnor]

Refactoring and bug fix

Proposed Changes

• Refactoring JUnitPerfInterceptor logic
• Bug fix for when maven-surefire-plugin is configured to run tests within a class in parallel (fix for statement build concurrency issue)
• Update to require @JUnitPerfTestActiveConfig annotated fields be static

[codecov]

Codecov Report

Merging #101 (a9935c7) into master (65821c6) will decrease coverage by 0.65%.
The diff coverage is 76.00%.

@@             Coverage Diff              @@
##             master     #101      +/-   ##
============================================
- Coverage     91.60%   90.96%   -0.65%     
  Complexity      332      332              
============================================
  Files            24       24              
  Lines           846      874      +28     
  Branches         76       76              
============================================
+ Hits            775      795      +20     
- Misses           60       68       +8     
  Partials         11       11              

Impacted Files	Coverage Δ
...tperf/reporting/providers/HtmlReportGenerator.java	95.58% <ø> (ø)
...github/noconnor/junitperf/suite/SuiteRegistry.java	92.72% <ø> (-1.82%)	⬇️
...ithub/noconnor/junitperf/JUnitPerfInterceptor.java	83.96% <76.00%> (-3.22%)	⬇️

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