add cli and lowercase dash identifier

dash-cli.ps1

@@ -0,0 +1 @@
+docker exec -ti --user dash btcpayserver_dashd dash-cli $args

dash-cli.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker exec -ti --user dash btcpayserver_dashd dash-cli "$@"

docker-compose-generator/src/CryptoDefinition.cs

@@ -68,7 +68,7 @@ namespace DockerGenerator
                 },
 	            new CryptoDefinition()
                 {
-                    Crypto = "DASH",
+                    Crypto = "dash",
                     CryptoFragment = "dash"
                 }
             };