adding & importing ibc-rate-limit cleanup

[Reecepbcups]

TODO

• Get a guide up for adding a new directory (codeowners, coordination, requirements, labels, etc)
• Add Stride write -> @sampocs @asalzmann @riley-stride @shellvish and @ethan-stride
• Diff check feat/v50 branch upstream -> noble-assets fork (this pr)
• Add ibc-rate-limit label, give credit to original authors
• Write in basic e2e interchaintest if not already (take from spawn). Add to GH CI
  • Migrate over original bash scripts to ict
• Remove v50 from upstream / add to readme to use ibc-apps Archive upstream
• Tag a v8.0.0 release for ibc-rate-limit
• Anywhere that Stride-Labs/ibc-rate-limiting is needs to be renamed (i.e. docs)