RFC: Add support for the following UTF-8 chars in MonkeyC

In order to have useful communication with the end user regardless of language it is easy to get a message across for certain things with symbols.

It would be very nice/helpful if we can get support for the following UTF-8 chars

Heartrate: ♡ (U+2661) /  (U+2665) /  (U+2764) /  (U+1F493)

Male: ♂ (U+2642) / ⚣ (U+26A3)

Male/female: ⚥(U+26A5) / ⚤ (U+26A4)

Transgender: ⚧ (U+26A7)

Clock/time:  (U+23F2)  /  (U+23F0)

And perhaps one of the clock faces (U+1F550 - U+1F567)