added a file-config doc
ADD
docs/modules/ROOT/pages/cli/file-based-config.adoc
+= File Based Configuration
+
+File-based configuration is used to set command flags. Flag values do not need to be entered on a regular basis. The file is read on Kamel startup and the flags are set accordingly.
+
+To configure this flag, create a file named kamel-config.yaml on the same directory as your integration. The file must contain a yaml structure as shown in ./kamel-config.yaml.
\ No newline at end of file

ADD
docs/modules/ROOT/pages/cli/kamel-config.yaml
docs/modules/ROOT/pages/cli/kamel-config.yaml
added a file-config doc