✨ Add Mailcheck Node (#1690)

* Add Mailcheck integration

* compress logo

* Add mailcheck node info

* ⚡ Improvements

Co-authored-by: bugagashenkj <bugagashenkj@gmail.com>
Co-authored-by: Nosov Konstantin <nosov@nodeart.io>

packages/nodes-base/nodes/Mailcheck/Mailcheck.node.json

@@ -0,0 +1,15 @@
+{
+	"node": "n8n-nodes-base.mailcheck",
+	"nodeVersion": "1.0",
+	"codexVersion": "1.0",
+	"categories": [
+		"Utility"
+	],
+	"resources": {
+		"credentialDocumentation": [
+			{
+				"url": "https://docs.n8n.io/credentials/mailcheck"
+			}
+		]
+	}
+}