starknet_os: os resources test - add sha512

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• starknet_os: os resources test - add sha512 #14256 👈 (View in Graphite)
• starknet_os: generalize sha resource test to include sha512 #14255
• starknet_os: os resources test - l1 handler tx calldata factor #14152
• starknet_os: os resources test - deploy account tx calldata factor #14151
• starknet_os: os resources test - invoke tx calldata factor #14150
• starknet_os: os resources test - l1 handler tx constant factor #14149
• starknet_os: os resources test - deploy account tx constant factor #14148
• starknet_os: os resources test - declare tx #14147
• starknet_os: os resources test - invoke tx constant factor #14146
• starknet_os: os resources test - extract setup_test_builder #14145
• starknet_os: os resources test - add secp syscalls #14144
• starknet_os: os resources test - add send_message_to_l1 #14143 : 1 other dependent PR (#14153 )
• starknet_os: os resources test - add replace_class #14142
• starknet_os: os resources test - support virtual builtins, add sha256 #14141
• starknet_os: define sha256 batch resources constants #14140
• starknet_os: os resources test - add keccak #14139
• starknet_os: os resources test - add 3 more syscalls #14138
• starknet_os: os resources test - remove all fee transfer syscalls #14137
• starknet_os: os resources test - add emit event #14136
• starknet_os: os resources test - add meta tx #14135
• starknet_os: os resources test - measure linear factor, add deploy #14134
• starknet_os: os resources test - library call #14129
• starknet_os: initial test, measure call contract resources #14128
• blockifier_test_utils: add option to deploy from zero in test accounts #14258
• starknet_os_flow_tests: helper function to declare explicit classes #14257
• starknet_os: os resources test - create fixed deployable account #14173
• main

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PR Summary

Low Risk
Test-only changes to syscall resource measurement fixtures; no production OS or fee logic behavior changes in this diff.

Overview
Extends the OS syscall resource regression harness to cover Sha512ProcessBlock, matching the existing SHA-256 virtual-builtin path.

The Cairo OsResourcesTestContract now invokes sha512_process_block_syscall during __execute__. In os_resources_test, Sha512ProcessBlock is moved from unmeasurable syscalls into SYSCALLS_WITH_VIRTUAL_BUILTINS, and virtual-builtin overhead is applied via a shared sha_overhead_from_measurement helper using SHA512_BATCH_RESOURCES_LINEAR and SHA512_BLOCK_TO_ROUND (same pattern as SHA-256).

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