Update Cadence tests to latest API features (#161)

Preliminary work to update the Cadence tests to the upcoming API
features.
Most notable features include the ability to specify deployment
addresses in `flow.json` config file, thus allowing developers to import
the contracts under test, in their tests files. This allows the use of
nested types defined in these contracts. E.g.:

```cadence
let typ = Type<CapabilityDelegator.DelegatorUpdated>()
let events = Test.eventsOfType(typ)
Test.assertEqual(4, events.length)

let event = events[3]! as! CapabilityDelegator.DelegatorUpdated
Test.assert(event.isPublic == false)
Test.assert(event.active == false)

let capabilityType = Type<Capability<&ExampleNFT.Collection{NonFungibleToken.Provider}>>()
Test.assertEqual(capabilityType, event.capabilityType)
```
The above snippet allows performing assertions on events payload.

.github/workflows/integration-tests.yml

@@ -20,7 +20,7 @@ jobs:
       with:
         go-version: 1.18
     - name: Install Flow CLI
-      run: bash -ci "$(curl -fsSL https://raw.githubusercontent.com/onflow/flow-cli/master/install.sh)" -- v1.4.4
+      run: bash -ci "$(curl -fsSL https://raw.githubusercontent.com/onflow/flow-cli/master/install.sh)" -- v1.5.0
     - name: Run tests
       run: sh ./test.sh
     - name: Normalize coverage report filepaths