[TASK] Make docs more beginner friendly

[1xstj]

The documentation is well-structured and covers the components of their solution in a clear way (https://docs.webb.tools/docs/). However, my constructive feedback around the documentation is that bridging and privacy are one of the most complex topics in the industry, and the documentation lacks a more introductory part to help the end user understand the big picture of the product offering and its benefits. Some of these aspects are covered in the manifesto, but even with my developer (not privacy-oriented) profile, I struggled initially to understand the product offering. Therefore, I recommend starting the documentation with some basic examples or analogies to help users build their mental model of how the product works.

From tangle-network/dkg-substrate#569