feat: add font selection feature

[abhishekkumar08]

Font selection isn't there in the app, so using local storage to apply the fonts. Currently showing three fonts may add other if required

Fixes:#472

Description

Add font selection feature with currently three fonts 'anton', 'monospace' and 'roboto

Related issues and discussion

#472

Screenshots, if any

##Note I tried to make this as theme component but the can't get the code of how themes is applied to all, if you can share any resource it might be helpful for me and I can make the font-picker component as same as theme. Thanks!

Checklist

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