Support for Custom Font Overrides

[devanshi14malhotra]

Allow users to pass a ?font=Inter or ?font=Roboto query param to change the default font stack nested inside the generated <style> tag of the SVG payload.

[vallabhatech]

@devanshi14malhotra Hi, could you please assign this issue to me? I would like to work on this issue...

[SujalTripathi]

@devanshi14malhotra can you please assign me these issue and please add as level2

[SujalTripathi]

@devanshi14malhotra please make these issue ad level2 label becuase in these i have to change 4+ files with first understanding the details of code