feat: Add --suppress option for diff and apply commands (#2077)

pkg/app/diff_test.go

@@ -27,6 +27,7 @@ type diffConfig struct {
 	includeTests      bool
 	includeNeeds      bool
 	skipNeeds         bool
+	suppress          []string
 	suppressSecrets   bool
 	showSecrets       bool
 	suppressDiff      bool
@@ -76,6 +77,10 @@ func (a diffConfig) SkipNeeds() bool {
 	return a.skipNeeds
 }
 
+func (a diffConfig) Suppress() []string {
+	return a.suppress
+}
+
 func (a diffConfig) SuppressSecrets() bool {
 	return a.suppressSecrets
 }