Rewrite the parser without global variables

[awerqo]

When we use katana as a library and initialize the parser, it turns out to be one for the entire project (since it stores the settings in a global variable). Moreover, there is no function to reset these settings.

Maybe we should abandon global variables and put them in a structure so that we can use different site parsing parameters for different targets within one program?

[awerqo]

Has anyone figured out how to use this in library mode with different parser parameters for different targets? It seems completely impossible (due to parser options global for everything)

https://github.com/projectdiscovery/katana/blob/main/pkg/engine/parser/parser.go#L36
https://github.com/projectdiscovery/katana/blob/main/pkg/engine/parser/parser_generic.go#L16