op-e2e: Extract system test helpers

op-node: Reader/Writer API for marshaling code

sdk: fix withdrawal bug

contracts-bedrock: fix compiler warning

fix(ctb): Bump XDM semver

fix(cmon): Use the correct 'layer' label

Co-authored-by: Joshua Gutow <jgutow@oplabs.co>

fix(contracts-bedrock): SafeCall FFI Interface Fuzzing

Adds a `pure` modifier to a test contract's method
to silence a compiler warning.

op-program: Add e2e test for FPP

op-program: Specify l2 block number to stop derivation at

contracts-bedrock: update constructor require statment