Scanners Integration (#18)

* Research scanning

* Move files around

* Reports the list

* Scanner happens

* Commit

* Work on alternative

* refactorings

* Progress

* Save the state

* Commit

* Display trivy Results

* Checkov also reports

* Better display

* Correct trivy numbers

* Scan pre-install manifest

* Readme items

* Static checks

pkg/dashboard/subproc/scan.go

@@ -0,0 +1,15 @@
+package subproc
+
+type Scanner interface {
+	Name() string                                                           // returns string label for the scanner
+	Test() bool                                                             // test if the scanner is available
+	ScanManifests(mnf string) (*ScanResults, error)                         // run the scanner on manifests
+	ScanResource(ns string, kind string, name string) (*ScanResults, error) // run the scanner on k8s resource
+}
+
+type ScanResults struct {
+	PassedCount int
+	FailedCount int
+	OrigReport  interface{}
+	Error       error
+}