`README.md`: Add guide on user local install and document build dependencies for Fedora

[mbana]

• Add instructions on how to invoke meson so it installs in $HOME/.local.
• Add dnf command to use for installing build dependencies under Fedora.

[jacobgkau]

@mbana Please make the change requested in the unresolved review thread. (I still do not have access to push to this branch.)

[mbana]

@mbana Please make the change requested in the unresolved review thread. (I still do not have access to push to this branch.)

Hi, I want to delete my fork. Can you please take a look at the changes as and when you can please.

[jacobgkau]

The commands look fine now. Regarding the wording:

NB: We do not guarantee that we will keep the set of commands below up to date nor support it. That said, to install dependencies on Fedora:

There is only one "unsupported" Fedora command present, but this wording makes it sound like the rest of the readme is unsupported and/or applies only to Fedora. I think a "To install dependencies on Fedora:" would be sufficient, and if the instructions become out-of-date in the future, Fedora users are welcome to submit further PRs to update them. Not sure if that would address what @isantop was bringing up earlier.