Convert a text string from the format "CamelCase" to "Camel Case". This is used for converting variable names such as "LevelDesignation" to "Level Designation" for the purpose of prettifying plot labels.
A string vector in 'CamelCase' format to format
Returns a formatted string.
camel_clean("NoteHowTheStringIsFormatted") #>  "Note How The String Is Formatted"