Add version metadata in compiled executable

[spooky]

It would be very welcome to have FFmpeg's version displayed in the "File Version" column of Windows File explorer, as that column is currently left empty.

Why

This change would make it much easier for users to see which version they have installed directly in File Explorer, without having to open the command line and run "ffmpeg -version". I'm not sure if other operating systems have similar file version tracking in their explorers, but adding this feature for Windows would definitely improve version tracking.

Steps to reproduce

1. Open Windows Explorer:

Press Windows + E to open a new Windows Explorer window.

2. Navigate to the FFmpeg Executable:

Go to the directory where FFmpeg is installed (e.g., C:\Program Files\FFmpeg\bin).

3. Add the File Version Column:

a. Right-click on the column headers in the file list (where it says "Name," "Date modified," etc.).
b. In the context menu, select "More..." to open the "Choose Details" dialog.
c. Scroll through the list and check the box next to "File version".
d. Click "OK" to apply the changes.

4. Check the File Version:

a.Locate the ffmpeg.exe file in the list.
b.You should see that the "File Version" column is NOT populated with the version information for FFmpeg.

[spooky]

Empty file version in file explorer

[MasterQuestionable]

͏    Primarily Windows only..?

[Balling]

That will tell nothing, as you can hundreds of configs, like openssl compiled in or not, libfdk_aac compiled or not and 50 other options.

Also each sublibrary can be its own version, that is why it is printed when you execute the executable.

[spooky]

FFmpeg releases are numbered, the current version being 7.1. This numbering is independent of whether libraries like OpenSSL, libfdk-aac, etc., are compiled or what versions of each sublibrary are being used.

I'm not sure I understand the comment about "that will tell nothing". A simple "7.1" in that column would tell enough.