Params to be updated to camelCase

[rmccar]

The following params need updating to follow the camelCase naming convention we use in the DS. We have recently updated some in this way but I have spotted some more that will also need updating. This will be a breaking change as we will be updating the names of some params.

• The messageID param on the message component needs to be renamed messageId
• The maxlength param on the access-code component needs to be renamed maxLength

[rmccar]

Added to other param camel case card