Introduction to 'tdnf'

On Photon OS, tdnf is the default package manager for installing new packages. It is a C implementation of the DNF package manager without Python dependencies.

Tdnf appears in the minimal and full versions of Photon OS.

Tdnf implements a subset of the dnf commands as listed in the dnf guide.

Last modified July 24, 2023: trivial change to show what's up (911b3fb)