TLang array assignment support

Some work done today on getting array indexing support added to #tlang

```
[WARNING] We have an array assignment, here is the indexers: [[varExp: i], [integerLiteral: 1 (SIGNED_INTEGER)]]
[INFO] Then identifier is type actually: myArray
[INFO] ParseTypedDec: SymbolType=ASSIGN
[ERROR] We are still implenenting array assignments
core.exception.AssertError@source/tlang/compiler/parsing/core.d(1647): Assertion failure
```