Support for signing uploaded RPM

[ExplodingDragon]

Feature Description

if RPM Metadata does not contain a GPG signature, it will not be possible to install using yum/dnf.

curl --user user:pass --upload-file golang-static-1.20.6-1.el9.x86_64.rpm  https://git.example.com/api/packages/packages/rpm/upload
dnf config-manager --add-repo https://git.example.com/api/packages/packages/rpm.repo
dnf makecache
dnf install golang-static -y

Screenshots

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