Implement L2 spell to update OFT rate limits

[SidestreamColdMelon]

Implements, according to the spec outlined here: https://hackmd.io/@ColdMelon/HyEA0M63bl

• Reusable L2 spell L2UpdateOFTRateLimitsSpell
• Relevant L1 helper relayUpdateOFTRateLimits
• Relevant happy-path E2E tests of the spell and the helper
• Gas profiler to evaluate required gas SkyLinkGasProfiler

---

Gas profiler output for the spell:

$ forge script script/SkyLinkGasProfiler.s.sol:SkyLinkGasProfiler --sig "run_rate_limits_update_spell(uint32 dstEid, address receiver, address remoteEndpoint, address usdsOftAddress)" 30106 0x6fdd46947ca6903c8c159d1dF2012Bc7fC5cEeec 0x1a44076050125825900e736c501f859c50fE728c 0x4fec40719fD9a8AE3F8E20531669DEC5962D2619

  Starting gas profiling for lzReceive on dstEid: 30106
  ---------------------------------------------------------
  Aggregated Gas Metrics Across All Payloads:
  Overall Average Gas Used: 58528
  Overall Minimum Gas Used: 58528
  Overall Maximum Gas Used: 58528
  Estimated options:
  0x0003010011010000000000000000000000000000f00e
  ---------------------------------------------------------
  Finished gas profling for lzReceive on dstEid: 30106
  ---------------------------------------------------------