add instructions on requesting a Grant in "Doing Internal Work"

https://docs.dorg.tech/workflows/doing-internal-work

in addition to committed roles, another alternative to the swarm for larger scopes of work should be a grant proposal. we should have some small instructions guiding people on how to request grant funding.

this should also be reflected as a grant template in the forum's Outflows category.

here is an example: https://forum.dorg.tech/t/daoification-mvp/362