starknet_os: os resources test - add sha512

[dorimedini-starkware]

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[dorimedini-starkware]

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• starknet_os: proper base measurement in OS resources test #14294
• 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 - add secp syscalls #14144 : 1 other dependent PR (#14145 )
• 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 and measurement-contract changes; no production fee or syscall execution logic modified.

Overview
Extends the OS resources regression path so Sha512ProcessBlock is measured like SHA-256 instead of being skipped as unmeasurable.

The Cairo OsResourcesTestContract now invokes sha512_process_block_syscall in __execute__. In starknet_os::test_utils, builtin scaling is centralized in scale_builtin_cells, and SHA-512 batch linear costs follow the same unscaled + scaled layout as SHA-256 via SHA512_BATCH_RESOURCES_LINEAR_UNSCALED. os_resources_test treats SHA-512 as a virtual builtin, adjusts measured resources with SHA512_BATCH_RESOURCES_LINEAR_UNSCALED / SHA512_BATCH_SIZE, and drops it from UNMEASURABLE_SYSCALLS so the regression test covers all expected syscalls.

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