Co-authored-by: Snoodelz <Snoodelz@users.noreply.github.com>

Identifiers can now reach variables in the scope. However not currently working with arithmetic operations. Think the AST for that one has priority before variable lookup

Messy but functional code for bot calls and method calls. say [1,2,3].length(). Will need to be refactored.

Adds variable declaration

See merge request !2

Merged recent changes to branch

See merge request !1

Implemented so multiple statements can be evaluated, fixed some location issues for pretty error messages