Add instructions on how to use the VM when building an SDK

[salaheldinsoliman]

What problem does your feature solve?

A deeper understanding of the Soroban VM is need for building a better, more efficient SDK.
The Build your own SDK doc, in my opinion, lacks critical information for SDK builders, like the design decisions behind Soroban VM for instance

What would you like to see?

Precious info like in: https://stellar.org/blog/developers/why-doesnt-soroban-use-a-jit
And https://stellar.org/blog/developers/project-jump-cannon-choosing-wasm

Formulated in a way that exposes clear points on how to use the VM. For instance, reading Why doesn't Soroban use a Jit leads to the conclusion that wen building an SDK, all the heavy work (like allocating memory) shall be done host side not guest side.

What alternatives are there?

Discord is always there :) but precious convos as:
https://discordapp.com/channels/897514728459468821/1067534037310255225/1273873467699105907
Usually get lost