Add support for generating sources for RHEL10.

[phracek]

Add support for generating sources for RHEL10

Added distconf/rhel-10-x86_64 configuration file.
Add rhel10 to tests/minimal-dockerfile files

[phracek]

@praiskup @SlouchyButton Can you please review it as soon as you have free time? Thanks.

[phracek]

RPM build failures:

Start: buildsrpm
Start: rpmbuild -bs
sh: /usr/bin/python3.6: No such file or directory
sh: /usr/bin/python3.6: No such file or directory
Building target platforms: x86_64
Building for target x86_64

[SlouchyButton]

Please bump the version in pyproject.toml.

EPEL build failure is expected, it shouldn't be enabled (it stayed enabled for PRs for some reason).

If, for some reason, this change is required in EPEL8 and 9, then this will have to be ported to the legacy branch, which is used for EPEL build due to outdated Python. PyPi distributed version will work everywhere as long as the python version dependency from pyproject.toml is met.

[SlouchyButton]

RPM build failures:

Start: buildsrpm
Start: rpmbuild -bs
sh: /usr/bin/python3.6: No such file or directory
sh: /usr/bin/python3.6: No such file or directory
Building target platforms: x86_64
Building for target x86_64

Where did you get this error? From workflow logs I see fedora passed and epels failed with different reasons.

[phracek]

RPM build failures:

Start: buildsrpm
Start: rpmbuild -bs
sh: /usr/bin/python3.6: No such file or directory
sh: /usr/bin/python3.6: No such file or directory
Building target platforms: x86_64
Building for target x86_64

Where did you get this error? From workflow logs I see fedora passed and epels failed with different reasons.

From Copr builds.

[SlouchyButton]

From Copr builds.

I see that Fedora passed, so I think we good. Merging, thanks a lot for the changes. Will make a release.