1.0.0-M1

Release notes:

• Supports Camel 3.0.0-M4
• Supports Knative 0.7.1
• Dropped support for Camel 2.x
• Full support for YAML DSL
• Switched to GraalJS for the JS runtime
• Improvement for Groovy/Kotlin DSL
• Moved documentation to the new website: https://camel.apache.org/camel-k/latest/
• Several bug fixes and improvements
• Dev improvements: operator-sdk 0.9.0 (full go mod)