Add HTTP service contract type support

[TharmiganK]

Purpose

$Subject

Part of: ballerina-platform/ballerina-library#6378

Examples

Checklist

• Linked to an issue
• Updated the changelog
• Added tests
• Updated the spec
• Checked native-image compatibility
• Checked the impact on OpenAPI generation

[codecov]

Codecov Report

Attention: Patch coverage is 30.51724% with 403 lines in your changes missing coverage. Please review.

Project coverage is 79.63%. Comparing base (af747e4) to head (dd3343e).
Report is 28 commits behind head on master.

❗ Current head dd3343e differs from pull request most recent head 27c9b4f

Please upload reports for the commit 27c9b4f to get more accurate results.

Files	Patch %	Lines
...ina/stdlib/http/compiler/HttpServiceValidator.java	23.13%	87 Missing and 16 partials ⚠️
...compiler/HttpServiceContractResourceValidator.java	0.00%	89 Missing ⚠️
.../compiler/codeaction/ImplementServiceContract.java	3.50%	55 Missing ⚠️
...compiler/codemodifier/ServiceTypeModifierTask.java	50.00%	31 Missing and 3 partials ⚠️
...dlib/http/compiler/HttpServiceObjTypeAnalyzer.java	16.66%	27 Missing and 3 partials ⚠️
...er/codemodifier/PayloadAnnotationModifierTask.java	31.03%	16 Missing and 4 partials ⚠️
...erina/stdlib/http/api/HttpServiceFromContract.java	0.00%	20 Missing ⚠️
...lib/http/compiler/ResourceFunctionDeclaration.java	0.00%	19 Missing ⚠️
...piler/codemodifier/HttpPayloadParamIdentifier.java	37.50%	9 Missing and 1 partial ⚠️
...allerina/stdlib/http/api/HTTPServicesRegistry.java	61.11%	6 Missing and 1 partial ⚠️
... and 7 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2037      +/-   ##
============================================
- Coverage     80.91%   79.63%   -1.28%     
- Complexity      561      595      +34     
============================================
  Files           392      399       +7     
  Lines         21696    22154     +458     
  Branches       5005     5086      +81     
============================================
+ Hits          17555    17643      +88     
- Misses         3126     3471     +345     
- Partials       1015     1040      +25     

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[sonarcloud]

Quality Gate passed

Issues
17 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.8% Duplication on New Code

See analysis details on SonarCloud