CasC configuration

Configuration of the "Configuration as Code".

Name	Environment	Description	Default value
`ontrack.config.casc.enabled`	`ONTRACK_CONFIG_CASC_ENABLED`	Is the configuration as code enabled?	true
`ontrack.config.casc.locations.<0>`	`ONTRACK_CONFIG_CASC_LOCATIONS_<0>`	List of resources to load and to monitor for changes	Empty list
`ontrack.config.casc.reloading.cron`	`ONTRACK_CONFIG_CASC_RELOADING_CRON`	Cron schedule for the reloading. Leave blank or empty to disable the automated reloading.
`ontrack.config.casc.reloading.enabled`	`ONTRACK_CONFIG_CASC_RELOADING_ENABLED`	Enables the creation of a job to reload the CasC.	false
`ontrack.config.casc.secrets.directory`	`ONTRACK_CONFIG_CASC_SECRETS_DIRECTORY`	Directory used to store the secret files (used only when type == "file"
`ontrack.config.casc.secrets.type`	`ONTRACK_CONFIG_CASC_SECRETS_TYPE`	Source for the secrets. Either "env" (default) or "file"	env
`ontrack.config.casc.upload.enabled`	`ONTRACK_CONFIG_CASC_UPLOAD_ENABLED`	Is the upload of Casc YAML file enabeld?	false