new: [install.sh] support ``mingw``

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

src/install.sh

@@ -256,6 +256,12 @@ install.docker-toolbox-for-mac() {
 }
 
 
+install.mingw() {
+    ## will install compose, but can't be used
+    install.linux
+}
+
+
 install.wsl() {
     CHARM_PATH=~/.charm-store
     get_charm_store "${DEPLOY_REF}" || return 1