Support more characters in protocol 6 (Beepwear Pro)

[synthead]

By using even higher values than the character indexes in CHARS_PROTOCOL_6...

timex_datalink_client/lib/timex_datalink_client/helpers/char_encoders.rb

Line 7 in 7dcbcfd

CHARS_PROTOCOL_6 = "0123456789 abcdefghijklmnopqrstuvwxyz!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~"

...as characters to protocol_6_chars_for...

timex_datalink_client/lib/timex_datalink_client/helpers/char_encoders.rb

Lines 23 to 25 in 7dcbcfd

	def protocol_6_chars_for(string_chars, length: nil, pad: false)
	chars_for(string_chars, char_map: CHARS_PROTOCOL_6, length:, pad:)
	end

...it appears that there are more characters that can be displayed on the Beepwear Pro:

However, with a high enough value, it appears to put garbage on the display: