Update Governance Processes to reflect budgets + normal proposals

[kempsterrrr]

The Governance Process page currently does not provide detail for how to apply for budgets as a Sub-DAO, only the DDIP projects itself. Therefore, it needs to be updated to include Sub-DAO's and how they are formed.

Resources:

• Governance section of Erik's DAO Os book
• P-22: Governance Structure Upgrade

Also consider migrating the Budgets/Grants category into the proposal category on the forum and using tags to distinguish between the different types of proposals.

Maybe there is also a case for adopting an explicit multi-type governance proposal system like ENS and Gitcoin.

[kempsterrrr]

We also need to provide more specificity on how members list proposals including name convention at each stage - [DRAFT] vs P-XX - see forum comment here.