Add denyRegex support for import-alias-naming rule (#927)

testdata/import-alias-naming-custom-config-with-only-deny.go

@@ -0,0 +1,17 @@
+package fixtures
+
+import (
+	_ "strings"
+	bar_foo "strings"
+	fooBAR "strings"
+	v1 "strings"       // MATCH /import name (v1) must NOT match the regular expression: ^((v\d+)|(v\d+alpha\d+))$/
+	v1alpha1 "strings" // MATCH /import name (v1alpha1) must NOT match the regular expression: ^((v\d+)|(v\d+alpha\d+))$/
+	magical "magic/hat"
+)
+
+func somefunc() {
+	fooBAR.Clone("")
+	bar_foo.Clone("")
+	v1.Clone("")
+	magical.Clone("")
+}