ISO 15118 and improved groovy developement

• Added custom iso 15118 feature support
• Changed groovy part strategy (from this point groovy scripts are not part of this project, but a separate project https://github.com/v-bodnar/GroovyOcppSupplier)

Ocpp Server first release

Features completed:

• GUI/NO GUI mode
• Ocpp server configuration using groovy
• TLS/SSL support
• REST API sending ocpp messages
• REST API configuring ocpp server
• REST API managing certificates