bug#73044: [PATCH] Add project-find-file-in-root

[Dmitry Gutov <dmitry@gutov.dev>]

Version: 31.1

Hi Spencer,

On 05/09/2024 17:01, Spencer Baugh via Bug reports for GNU Emacs, the 
Swiss army knife of text editors wrote:
> Several users have asked me for a command which is just
> find-file, but starting from the project root.  In large
> projects, where project-files is expensive, this will have
> substantially better performance than project-find-file.
> 
> Also, it allows opening files which aren't included in
> project-files without paying the further cost of running
> project--files-in-directory (which is what happens when passing
> INCLUDE-ALL=t to project-find-file).
> 
> Also, it may help with user confusion about why
> project-find-file doesn't behave like find-file.  (which I've
> encountered a few times)
> 
> This command is equivalent to C-x p o C-x C-f, but it's nice to
> be able to bind it to a specific key.
> 
> Overall, this is easy enough to provide, so let's just do that.

Makes sense, thanks, pushed to master (adding the 'interactive' form and 
a NEWS entry).

The name is a little verbose - if anybody has a better idea later, 
they're welcome to suggest it, there is some time to do a change.