Move some things around to make it easier to merge in changes.

Check if there is a device.api property on the sink/source and
if there is, mark the sink/source as a hardware device.

Link Mauve authored Jul 22, 2020 and Wim Taymans committed Aug 17, 2020

This tool detects and fixes common English spelling mistakes, with
generally very few mistakes.

Here is the command I used to generate this commit.  There were a few
changes that had to be done manually, and of course adding the ignore
file:
```shell
codespell -I .codespell-ignore -x .codespell-ignore -w
```

I didn’t add it to the CI, but this would be a good place for it.

Don't try to do work when not needed

Most just return nothing or say that the extension is not supported.
Remove some warnings, they should show up in the log from setting
the error in the context.

Makes paman work

This reverts commit de71618b.

Doesn't work when the device is removed and added again.

So that we can allow space in the keys.

Load the settings into the restore list, when we see a device and it's
in the restore list, restore the profile and remove from restore list.
All updates to profiles go into the save list and it is then saved.

The active profile is set to -1 initially, don't try to do anything
with the profile if it is invalid.

See rhbz#1868332

Allow spaces in the property values.

Use the same code to enumerate the profiles and the current profile,
this makes sure we have all info in the Profile param as well and
don't need to do a lookup in the EnumProfile.

Save card profiles to file and restore.

The ports have references to the profile info.

Nodes are stored with their (unique) name and restored with their
ID on the metadata.

It does not seem to work anymore with recent versions.

Use the node and port info to enum formats when available.
Use simple resync after each operation, when nothing is pending,
loop over the results.

Right before connecting, set ourselves to not negotiated.
First look for errors, then the negotiated state.
Handle NULL caps after negotiation.

We can't allow to share our memory because it might disappear when
the server or source renegotiates.

Client that call port_get_buffer with 0 frames get the empty scratch
buffer because we can't know the final output size.

Make sure we emit the buffer callback either from the calling thread
or from the thread_loop. Mark the callback as pending and don't call
the process function until the callback has been handled.