Be able to run meaningful program

# Why?

To validate usefulness of our engine, we need to be able to run meaningful programs.
We added implementation of the advent of code problem 1 in pure WAST, in our subset of it

# What?

- [x] $num.eq
- [x] $num.or

- [ ] memory
- [ ] $num.load... (like load8_u)
- [x] call

- [ ] export

Start by reviewing the existing pure WAST implementation of Advent of Code problem 1 and the checked-off operations in this issue. Identify the implementation entry points for memory, numeric loads such as load8_u, and exports. Done means the meaningful program can run with those unchecked WebAssembly features supported.

Written by the indexing model from the issue text.