message: Fix add highlighting support for VerbatimOut
diff: <key>name</key>
  <string>meta.function.verbatim.latex</string>
  </dict>
  + <dict>
  + <key>begin</key>
  + <string>(?:\s*)((\\)begin)(\{)(VerbatimOut)(\})(\{)([^\}]*)(\})</string>
  + <key>captures</key>
  + <dict>
  + <key>1</key>
  + <dict>
  + <key>name</key>
  + <string>support.function.be.latex</string>
  + </dict>
  + <key>2</key>
  + <dict>
  + <key>name</key>
  + <string>punctuation.definition.function.latex</string>
  + </dict>
  + <key>3</key>
  + <dict>
  + <key>name</key>
  + <string>punctuation.definition.arguments.begin.latex</string>
  + </dict>
  + <key>4</key>
  + <dict>
  + <key>name</key>
  + <string>variable.parameter.function.latex</string>
  + </dict>
  + <key>5</key>
  + <dict>
  + <key>name</key>
  + <string>punctuation.definition.arguments.end.latex</string>
  + </dict>
  + <key>6</key>
  + <dict>
  + <key>name</key>
  + <string>punctuation.definition.arguments.begin.latex</string>
  + </dict>
  + <key>7</key>
  + <dict>
  + <key>name</key>
  + <string>support.class.latex</string>
  + </dict>
  + <key>8</key>
  + <dict>
  + <key>name</key>
  + <string>punctuation.definition.arguments.end.latex</string>
  + </dict>
  + </dict>
  + <key>contentName</key>
  + <string>markup.raw.verbatim.latex</string>
  + <key>end</key>
  + <string>((\\)end)(\{)(\VerbatimOut)(\})</string>
  + <key>name</key>
  + <string>meta.function.verbatim.latex</string>
  + </dict>
  <dict>
  <key>begin</key>
  <string>(?:\s*)((\\)begin)(\{)(alltt)(\})</string>
  