Automatically generate a secret for ingress if TLS is enabled

[johnmcollier]

Currently, setting up an app to use ingress over HTTPS in Codewind requires some manual effort for the user:

• Either retrieve or generate SSL certificates for the ingress
• Create a secret containing that certificate
• kubectl edit the ingress resource and add the secret to it.

When the isHTTPS project setting is set to true, If Codewind is unable to find a secret containing the certificate for the ingress, it should create a self-signed certificate automatically for the ingress to use and add it to the ingress when creating it.