Proposed new guiding principle for the manifesto: flat hierarchical structure

I wish to add another heading to the manifesto as suggested by @nelsonic in #12.

Many of the people who are already part of the dwyl community and who may have had a chance to get a feel for the organisation in person may know that dwyl does not value people's contributions according to a hierarchy. However, **for those who may come across dwyl with less background knowledge it may be valuable to point out that dwyl has a flat hierarchical structure.**

### What I mean by this is that:
- Anyone/ everyone should feel comfortable voicing their opinions and contributing regardless of gender, ethnicity, disability, sexuality, background etc.
- People should not feel inferior or 'less qualified' to contribute if they have less experience than someone else

### Why do I think this is important?
Sometimes the web can be nice and friendly, at other times not so much... I think it's key to ensure that people know that dwyl is an inviting and welcoming organisation without intimidating hierarchies. I think this is especially important given the different ways people use spaces whether that be influenced by their gender or other factors, dwyl should feel welcoming to all. I don't think I'm alone in having seen an online forum/conversation before and thinking 'I'm too nervous to contribute, it looks intimidating'.

I'm not sure if the term 'flat hierarchical structure' is the most relevant and would love to hear other people's thoughts on this and the principle more widely?

There is currently the following point on Accessibility which is perhaps related:

> Accessibility: Whilst we don’t know exactly what this is going to look like yet, we’re counting on our community of users to let us know exactly what they need from day 1.

However to me this point feels more directed at 'our community of users' rather than people who may not consider themselves within this remit but perhaps more as developers.