feat: Support Multi-Line and String Escapes

[BellCubeDev]

The Papyrus compiler supports escaping in, as far as I know, three contexts:

• Within a string. The following are valid:

  Escape	Resulting Character
  \n	New Line
  \t	Tab Character
  \"	"
  \\	\

• At the end of a line. For example:

  event onInit()
      Game.GetPlayer() \
          .Kill()
  endEvent

• Within parameter lists. While this falls into the previous by definition, the syntax highlighting method does not.
  Example:

  function testingFunction(\
      , Form akForm1, Location akLoc1, Form akForm2, \
        Form akForm3, Location akLoc2, Form akForm4 \
      , Form akForm5, Location akLoc3, Form akForm6 \
      , Form akForm7, Location akLoc4, Form akForm8 \
  )
  endFunction

This pull request addresses all three of these cases within the Papyrus grammar.

[joelday]

🎉 This PR is included in version 3.2.0 🎉

The release is available on:

• v3.2.0
• GitHub release

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