Add support for VMware cursor encoding

Supports both classic cursor type and alpha cursor type. In classic
mode the server can send 'inverted' pixels for the cursor, our code
does not support this but handles these pixels as opaque black.

Co-authored-by: Samuel Mannehed <samuel@cendio.se>

kasmweb/core/encodings.js

@@ -51,6 +51,8 @@ export const encodings = {
     pseudoEncodingVideoScalingLevel9: -1987,
     pseudoEncodingVideoOutTimeLevel1: -1986,
     pseudoEncodingVideoOutTimeLevel100: -1887,
+
+    pseudoEncodingVMwareCursor: 0x574d5664,
 };
 
 export function encodingName(num) {