Add the string tag prefix for tag values

[KallynGowdy]

:rocket: Improvements

• Added the ability to force AUX to intepret values as strings by prefixing the tag value with the 📝 emoji.
  • This can be useful for when you want to ensure that a tag value is interpreted a string.
  • For example, the string "01" will be interpreted as the number 1 by default but "📝01" will preserve the leading 0.