Create an ability to initialize a variable inline

Instead of having to:
```
var b: bool;
b = true;
```
it would be nice to have the ability to declare and initialize inline:
```
var b: bool = true;
```

If a type can be inferred from the expression, then the explicit type can be omitted, but let's take it one step at a time.
This could also open the door for immutable ``val`` objects.