Fix inline local declarations in method arguments

[BigQ749]

Summary

• Hoist inline local declarations to the start of the generated method body.
• Emit the inline expression as an assignment (for example, z=1) instead of a declaration inside a method-call argument.
• Update AssignAndPassAsParameterSimpleTest to cover successful OpenCL generation and caching.

Validation

• git diff --check passes.
• Source delimiter checks pass.
• Full Maven/JUnit execution was not available in the local environment because Java and Maven are not installed.

Closes #97.

Note: I noticed other open PRs linked to this issue; please keep whichever implementation best fits the project's review and history.