feat: OP Stack integration test

[epociask]

OP Stack Integration Test

Fixes Issues

• Add test which asserts to correctness of DA read/write with OP devnet  #29
• Parallel tests #34

Changes proposed

• Added a test which asserts that the OP batcher can submit to proxy server and a verifier node can traverses the derivation pipeline to read batches from the server
• Refactored e2e testing package using better encapsulation/abstraction patterns
• Ingest test flags through env to avoid collision with OP E2E framework initialization
• Added .devnet file to store devnet allocations which are ingested by OP e2e for initializing bootstrap states on local L1/L2 chains and configuring derivation/submission/DA

Screenshots (Optional)

Note to reviewers