Support glob patterns while preloading

[orhun]

Is your feature request related to a problem? Please describe.
According to sysctl.d(5), following configuration entry should be supported:

key.pattern.*.with.glob = whatever

Describe the solution you'd like
Implement the functionality with using the globwalk or regex crate.

Describe alternatives you've considered
-

Additional context
In my tests, sysctl does not work properly as well while preloading the following configuration:

# contents of sysctl.conf
net.ipv4.conf.*.rp_filter = 2

$ sysctl -p sysctl.conf
sysctl: cannot stat /proc/sys/net/ipv4/conf/*/rp_filter: No such file or directory

$ systeroid -p sysctl.conf
systeroid: cannot stat /proc/sys/net/ipv4/conf/*/rp_filter: No such file or directory
systeroid: ambiguous parameter name: net.ipv4.conf.*.rp_filter