feat: implement AddOperationV2 with long[] carry-propagated addition

[parthdagia05]

Fixed Issue(s)

Partial fix for #10131

Description

Implements AddOperationV2.staticOperation() that was stubbed in #10105. Performs 256-bit addition directly on the long[] stack with carry propagation across 4 limbs. Zero object allocation per operation.

Motivation

The previous implementation was a stub that threw UnsupportedOperationException, preventing execution paths from using this operation. This change enables efficient 256-bit addition aligned with EVM design goals of low-level, allocation-free execution.

Summary

• Implements AddOperationV2.staticOperation()
• Adds 256-bit addition using long[] with carry propagation across 4 limbs
• Eliminates object allocation by operating directly on primitive arrays
• Replaces stub implementation with a fully functional operation

Checklist

• Considered documentation - no doc changes required (internal EVM change behind experimental flag)
• Considered the changelog - no changelog update required (experimental feature)
• No database changes

Tests run locally

• spotless: ./gradlew spotlessApply
• compile: ./gradlew :evm:compileJava
• unit tests: ./gradlew :evm:test

Notes

Part of #10131

[parthdagia05]

@siladu can you review this PR

[siladu]

Why is this deleted?

[parthdagia05]

The file MulOperationOptimized.java has a trailing space in its filename . On Windows, git can't checkout files with trailing spaces, so it was automatically marked as deleted and got included in my commit unintentionally. I've restored it in the latest push. The trailing space in the upstream filename may need to be fixed separately to avoid this issue for other Windows contributors.

[siladu]

Thanks fixing in #10147

[siladu]

Actually, I already fixed that in #10030

[parthdagia05]

I've addressed the requested changes, Please take another look.

[parthdagia05]

Actually, I already fixed that in #10030

Rebased onto latest main which includes #10030 the MulOperationOptimized deletion is no longer in my changes. Could you review the PR

[siladu]

Closing as discussed