Add meta description

[bogas04]

• [ ] Initially we can simply add some desc of the project and nishaan
• [ ] As we progress, we can collect meta data from current route;
  • [ ] Rahao pangti of current Shabad (Depends on #83)
  • [ ] Shabad results
  • [ ] Author Page
  • [ ] Raag Page
  • [ ] SGGS Ang
  • [ ] Nitnem Details

[bogas04]

Thanks to 36a5e9e2aef48659e76f3c55c1006103f098ca34, we now add titles based on routes.

We can extend it further to add meta data next.