Generates a random UUID (version 4) and returns it as a lowercase string.
Example:
# Example for uuid_generate println uuid_generate()
Normalises a UUID string to lowercase with dashes. Returns an empty string if the input is not a valid UUID.
Example:
# Example for uuid_parse
println uuid_parse("550e8400-e29b-41d4-a716-446655440000")
println uuid_parse("not-a-uuid")
Returns true if the input is a valid UUID string (with dashes, lowercase).
Example:
# Example for uuid_validate
println uuid_validate("550e8400-e29b-41d4-a716-446655440000")
println uuid_validate("not-a-valid-uuid")