Create RPM File - Githubissues

I added configurations for https://crates.io/crates/cargo-rpm to create a rpm package.

Installation:

user/group alexandrie is created if it doesn't yet exist
binary is installed to /usr/bin/alexandrie
readonly resources are installed to /usr/share/alexandrie
configuration file is installed to /etc/alexandrie.conf
a systemd service is installed which starts alexandrie with /etc/alexandrie.conf
storage (with write permissions for user alexandrie) is set up with empty directories in /var/db/alexandrie
if there's not yet a git repository in /var/db/alexandrie/crate-index, it is setup with the default config.json of the installation script

Hirevo / alexandrie