Introduce runnable examples with WASM

[JerryHue]

Partially addresses #31.

• Compile examples that can be run as WASM programs with minimal changes.
• Extend CodeBlock component to have an output window to redirect the output of WASM programs.

Additional comments

While this PR does not add the complete feature, it does demonstrate a glimpse what questions we have to address later: UI for the output window and controls. The current UI in the PR is very rough, and I do not expect it to be final.

The challenge to add the editable part is bigger than I thought it would, so I will approach that feature on my spare time, thinking of another plan of action than simply compiling a compiler like clang and hoping it works.

[humphd]

This experiment was interesting, but I don't think we're going to go this route, so I'll close it. Thanks for the prototype.

[CameronGray1210]

Agreed - I was holding out for the outcome of this, but doing some of my own investigation on this, I am still not happy about the options without making too many dependencies and/or exceptions to the simplicity of the main subject notes.

Thanks everyone for the attempt and consideration though!!