DietPi-Software | Split youtube-dl into own software title

[nonnorm]

Status: Ready

Commit list/description:

• DietPi-Software | Split youtube-dl into own software title

[MichaIng]

Not to forget that youtube-dl is a Python script/binary (not sure, the content is no plain text but it still must be called with Python and has a shebang accordingly, how does one call such? 😄). Strangely it still has a Python 2 shebang, so to allow calling it directly, I added a wrapper script to call it with Python 3. I verified that its internal update -U option works fine, updating the actual executable and not the wrapper script. As more and more distros remove Python 2 and hence more and more users report issues with this shebang, I hope the developer will adjust the shebang soon to explicitly call for Python 3. Then we can remove this ugly wrapper workaround.

I explicitly did not use the dependency system to pull Python 3, as this pull the whole development stack and pip, which is all not required here. Somehow we might want to make clear that For running Python scripts, apt install python3 is totally fine, while our install option is only required for using pip and/or compiling Python modules (the first usually implies the second).