[Task]: Switch mongo plugin implementation to non-reactive

[nidhi-nair]

Is there an existing issue for this?

• I have searched the existing issues

SubTasks

• Switch out of reactive library for Mongo
• Add our own layer for introducing reactive nature to Mongo
• Test for long running connections, make sure there is no leakage

[sumitsum]

@nidhi-nair can you please add details here as to why we need to do this ?

[nidhi-nair]

Hey @sumitsum this was proposed because of the connection leak problems we were facing. We can re-evaluate if this is still required on the basis of whether those leaks still exist.