Add a configuration strategy for Boolean encoding

[scottmatthewman]

Booleans are currently configured to output as the text strings true or false.

Add a new configuration parameter to CSVEncoderConfiguration to support different styles of encoding:

encoding type	True encodes as	False encodes as
.trueFalse (default)	true	false
.trueFalseUppercase	TRUE	FALSE
.yesNo	yes	no
.yesNoUppercase	YES	NO
.integer	1	0

Expected work to do:

• Add BoolEncodingStrategy enum to CSVEncoderConfiguration with all options documented
• Add boolEncodingStrategy property to CSVEncoderConguration
• Update CSVEncoderConfiguration.default to use the default [^1]
• Update Bool.encode() method to amend output based on configuration strategy
• Add unit tests for each strategy
• Review and verify generated DocC documentation