feature request: import common sections

[fommil]

Hi, thank you for making this amazing software available for all!

I am using it to produce star charts for any given night with DSO of particular interest highlighted. To produce the list I'm using https://telescopius.com/ and I'm creating entries like

text=ra_dec,15.644444,59.355833,0,0,1,0,0,0,0,0,+
text=ra_dec,15.644444,59.355833,0,0,1,1,0,0,0,0,NGC 5982
text=ra_dec,15.660278,59.331944,0,0,1,0,0,0,0,0,+
text=ra_dec,15.660278,59.331944,0,0,1,1,0,0,0,0,NGC 5985
text=ra_dec,16.783056,47.526667,0,0,1,0,0,0,0,0,+
text=ra_dec,16.783056,47.526667,0,0,1,1,0,0,0,0,NGC 6229

in each of four quadrants. I have a little python script that converts the telescopius CSV files into this format (happy to share it if you're interested) but it means I have to copy/paste the entries into each of my quadrants. It would be good if I could do somethnig like

@include my_targets.text

or something like that, in the relevant parts, so that I don't need to change my base config (except the timestamp) and only need to update the target list.

As a workaround, I'll just have my python script output the full cfg file each time and copy/paste the text. That also let me dynamically update the timestamp so that it's always tonight.

Alternatively, if star-charter had a feature to limit each kind of DSO by max magnitude, indepedently of stars, and to force label all of them (except open clusters), then I'd probably be able to dispense with telescopius entirely.