imagery updates

[shadeofblue]

Golem overview intro

the image at the beginning of "Golem Overview" might benefit from adding a "Custom runtime" to the right-hand part of the graph to ensure that readers understand that the payloads are not limited to just VM and WASM but that they can be virtually anything...

https://app.gitbook.com/@golem-network/s/golem-sdk-develop/introduction/golem-overview

or maybe there should be a suggestion that it's an open list (like having an empty container with three dots in it?)

Provider vs services

https://app.gitbook.com/@golem-network/s/golem-sdk-develop/introduction/provider

We might want to show that it's not always "input->processing->output->payment" but rather that it may also be something more services-related ... like "deploy-> .... run service .... -> payment (in set intervals?)" ...