Fix #41: added user routes

[LightCreator1007]

Overview

1. This PR fixes or fixes part of [Feature Request]: Create Routes to fetch and update user data. #41 .
2. This PR does the following: adds user routes and fixes fetcing logic in the frontend

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[LightCreator1007]

I tried a few things like using uuid from the auth.users as a pk for user_id in the public.users, and a flask decorator to authnticate user and get the uid. I am not completely sure if i am correct in my implementations and assumptions.
kindly guide if wrong at any point.

[Om-Thorat]

looks great, can you also create a route to get a specific user give a roll number?

[LightCreator1007]

umm i think i misunderstood something prolly, so we needed a path to get roll number of a user and store it as ID? but i did that in the add user route. This is just an assumption, but can we not explicitly ask the user for roll number and take it in as ID anyways coz the add user route already handles it?

[Om-Thorat]

The roll number can extracted using the mail id, since users will be allowed to login only the institute id.

[Om-Thorat]

Good Job! @LightCreator1007