A way to distinguish between luajit long tokens and lua 5.3 long tokens

[toxamin]

What feature are you requesting?

Currently, when parsing both LuaJIT and Lua 5.3+ files, the lexer creates tokens that have a value of type long.
For example, in LuaJIT 50LL, and in Lua 5.3 50, both produce a token with the same value. This is normally not an issue, as we can simply check whether the token ends with LL to distinguish between them, however that is clunky, and makes analysis code reliant on the text of the token, rather than the value.
I propose implementing a separate type for LuaJIT longs, such as a record LuaJITLong, and using that as the token value instead.

Can you go in further detail of what this feature is about?

var hmm = LuaSyntaxTree.ParseText("local a = 50LL", new LuaParseOptions(LuaSyntaxOptions.LuaJIT21));
var lit = hmm.GetRoot().DescendantNodes().OfType<LiteralExpressionSyntax>().First();
var tok = lit.Token;
var hmm2 = LuaSyntaxTree.ParseText("local a = 50", new LuaParseOptions(LuaSyntaxOptions.Lua54));
var lit2 = hmm2.GetRoot().DescendantNodes().OfType<LiteralExpressionSyntax>().First();
var tok2 = lit2.Token;
// Here, the tok.Value == tok2.Value

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