Fix minor issues found in RC testing

[TharmiganK]

Purpose

$Subject

• Add a property to skip publishing client native artifacts to WSO2 nexus. With this change, we have to enable this in the gradle.properties file, if we want to publish the artifacts with release workflow. If we do not need to release we need to mark it as true
• Fix optional response header mapping in the status code response. Without this change, when we have non-required headers in status code response, it is map to map<string|string[]>. With this change, the optional headers will be mapped as nilable record fields
• Fix printing Responses with 204 status code cannot have a body warning for response which does not define a request body schema
• Removed unused OAS_COMMON_102 from the common diagnostics
• Print the client warning/error diagnostics when bal commands are executed with openAPI tool integration

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud