generate curl_urls.txt

[z]

be able to generate a curl_urls.txt

@packer │ for example I split my pk3s into groups                
@packer │ on public servers i do not add maps from q3                              
@packer │ or i do not add nexball maps (only for pickup servers) 
@packer │ and then add different folders using -game ...         
@packer │ like                                                   
@packer │ -game packages/quake/ -game packages/nexball/ ...  

requires feature/tinydb branch

Discussing this more:

[-z-] │ you want "--tag" locally
[-z-] │ where --tag serves as a target directory for tracked packages specific to a -S [servername] 
[-z-] │ so anything that's --tag cts goes to ~/.xonotic/data/cts  # for example