Use mockery for generating mocks

The codebase is to use testify/mock instead of gomock

.mockery.yaml

@@ -0,0 +1,18 @@
+testonly: False
+with-expecter: True
+packages:
+  github.com/metal-toolbox/flasher/internal/runner:
+    config:
+      dir: internal/runner
+      fileName: "mock_{{.InterfaceName | firstLower}}.go"
+      inpackage: true
+    interfaces:
+      TaskHandler:
+      ActionHandler:
+  github.com/metal-toolbox/flasher/internal/device:
+    config:
+      dir: internal/device
+      fileName: "mock_{{.InterfaceName | firstLower}}.go"
+      inpackage: true
+    interfaces:
+      Queryor:

Makefile

@@ -16,10 +16,10 @@ REPO := "https://github.com/metal-toolbox/flasher.git"
 lint: gen-mock
 	golangci-lint run --config .golangci.yml
 
-## generate mocks
+## Generate mocks
 gen-mock:
-	go install go.uber.org/mock/mockgen@v0.4.0
-	mockgen -source internal/runner/runner.go -destination=internal/runner/runner_mock.go -package=runner
+	go install github.com/vektra/mockery/v2@v2.42.1
+	mockery
 	go mod tidy
 
 ## Go test