CI: add whitespace checker

Fix issues detected.

Also:

- One of the `.vc` files used LF EOLs, while the other didn't.
Make that one also use LF EOLs, as this is appare

CI: add whitespace checker

Fix issues detected.

Also:

- One of the `.vc` files used LF EOLs, while the other didn't.
Make that one also use LF EOLs, as this is apparently supported by
`nmake`.

- Drop `.dsw` and `.btn` types from `.gitattributes`.
The repository doesn't use them.

- Sync section order with the rest of files in
`tests/certs/EdelCurlRoot-ca.prm`.

- Indent/align `.prm` and `.pem` files.

- Delete dummy `[something]` section from `.prm` and `.pem` files.

Mental note:
MSVC `.sln` files seem to accept spaces for indentation and also support
LF line-endings. I cannot test this and I don't know what's more
convenient when updating them, so left them as-is, with specific
exclusions.

Closes #14031

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CODEOWNERS: remove the peeps mentioned as CI owners

These owners do not have the bandwidth/energy to do the reviews which
makes PRs stall and this ownership claim flawed. We can bring pe

CODEOWNERS: remove the peeps mentioned as CI owners

These owners do not have the bandwidth/energy to do the reviews which
makes PRs stall and this ownership claim flawed. We can bring people
back when the situation is different.

Follow-up to c04c78ac87c4d46737934345a

Closes #10386

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copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- save

copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205

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github: initial CODEOWNERS setup for CI configuration

Reviewed-by: Daniel Stenberg
Reviewed-by: Marcel Raad
Reviewed-by: Max Dymond

Closes #9505

[skip ci]