Add a context menu to display the value of a variable

[zero-plusplus]

If the value of the variable is a string.

• View Value - Show the displayed value to the new editor
• View as Text - Show the string that removed double quotation marks then escaped characters unescaped to the new editor

If the value of the variable is a number.

• View Value - Show the displayed value to the new editor
• View as Each Base Numbers - Show numbers in binary, decimal, hexadecimal, and scientific notation to the new editor