feat:support service contract reporting.

[SkyeBeFreeman]

PR Type

Feature.

Describe what this PR does for and how you did.

Adding the issue link (#xxx) if possible.

fixes #1134

[codecov]

Codecov Report

Merging #1139 (9c0b2e5) into 2021.0 (e4ac09c) will decrease coverage by 4.82%.
The diff coverage is 1.90%.

@@             Coverage Diff              @@
##             2021.0    #1139      +/-   ##
============================================
- Coverage     81.07%   76.25%   -4.82%     
+ Complexity     1690     1627      -63     
============================================
  Files           254      256       +2     
  Lines          5764     5909     +145     
  Branches        680      720      +40     
============================================
- Hits           4673     4506     -167     
- Misses          700     1011     +311     
- Partials        391      392       +1     

Files Changed	Coverage Δ
...loud/polaris/contract/PolarisContractReporter.java	0.00% <0.00%> (ø)
...is/contract/PolarisSwaggerApplicationListener.java	0.00% <0.00%> (ø)
...tencent/cloud/polaris/contract/SwaggerContext.java	0.00% <0.00%> (ø)
...laris/contract/config/PolarisContractModifier.java	0.00% <0.00%> (ø)
...ris/contract/config/PolarisContractProperties.java	0.00% <0.00%> (ø)
...ig/PolarisContractPropertiesAutoConfiguration.java	0.00% <0.00%> (ø)
...larisContractPropertiesBootstrapConfiguration.java	0.00% <0.00%> (ø)
...ntract/config/PolarisSwaggerAutoConfiguration.java	0.00% <0.00%> (ø)
...cent/cloud/polaris/contract/utils/PackageUtil.java	0.00% <0.00%> (ø)
...ing/web/WebMvcPatternsRequestConditionWrapper.java	0.00% <0.00%> (ø)
... and 7 more

... and 3 files with indirect coverage changes