[Enhancement] Create backend directories for routes, controllers,

[ZayedShahcode]

Currently, all of the backend is written in single app.js file.
Refactor the code, add multiple directories like routes, controllers. Maintain proper imports.

[asit2004]

I would like to work on this
could you please assign this to me?

[ZayedShahcode]

@asit2004 sure go ahead

[aarjav812]

hey @ZayedShahcode, can I try out this issue? can you please assign me. I already know how to handle SOCs.