Setup integration tests and CI (#11)

- Setup integration tests following pattern suggested in cosmos-sdk docs:
  https://docs.cosmos.network/v0.50/build/building-modules/testing#integration-tests
- Add tests for laconic modules query services
- Setup a CI workflow to run the integration tests

Reviewed-on: deep-stack/laconic2d#11
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

x/bond/keys.go

@@ -4,6 +4,9 @@ import "cosmossdk.io/collections"
 
 const (
 	ModuleName = "bond"
+
+	// StoreKey defines the primary module store key
+	StoreKey = ModuleName
 )
 
 // Store prefixes