Add TRLE/ZRLE encoding support?

[bob-u]

Would it be possible to add TRLE/ZRLE encoding to the library from here https://github.com/moononournation/ArduinoVNC?

From the comment in the code: 7.7.5. TRLE

• TRLE stands for Tiled Run-Length Encoding, and combines tiling,
• palettization, and run-length encoding. The rectangle is divided
• into tiles of 16x16 pixels in left-to-right, top-to-bottom order,
• similar to Hextile. If the width of the rectangle is not an exact
• multiple of 16, then the width of the last tile in each row is
• smaller, and if the height of the rectangle is not an exact multiple
• of 16, then the height of each tile in the final row is smaller.
• 7.7.6. ZRLE
• ZRLE stands for Zlib (see [RFC1950] and [RFC1951]) Run-Length
• Encoding, and combines an encoding similar to TRLE with zlib
• compression. On the wire, the rectangle begins with a 4-byte length
• field, and is followed by that many bytes of zlib-compressed data. A
• single zlib "stream" object is used for a given RFB protocol
• connection, so that ZRLE rectangles must be encoded and decoded
• strictly in order.

[TheNitek]

I ported the code: https://github.com/Links2004/arduinoVNC/pull/35