[ENG-71] Change Go module name from skip-mev/slinky --> dydxprotocol/slinky; Find and replace all local import paths with the new module name

[hwray]

• Change the Go module name from skip-mev/slinky --> dydxprotocol/slinky. This is required to correctly publish the Go package that our other repos will import
• Find and replace all local import paths with the new module name

[linear]

ENG-71 Connect sidecar handoff: Change Go module path and imports from skip-mev --> dydxprotocol