Make non-intimidating docs page

[shaspitz]

Problem

We should consider consolidating replicated security knowledge into a docs page, similar to https://alliance.terra.money/. With a simple protocol overview, rewards explanation, and concrete steps for module integration

Closing criteria

Docs page is created with:

• Explanations about the protocol that can be understood by non-programmers and programmers alike
• Info on fee distribution, validator profitability considerations, validator UX, etc.
• Module integration instructions (we can do better than "copy the dummy consumer from our repo")
• FAQ section along with link to https://informal.systems/blog/replicated-vs-mesh-security

[shaspitz]

Superseded by tasks in #750