Add Storage Manager

[sairam4123]

Adds storage manager

Supersedes #41

[Drachenfrucht1]

We should decide if we want to take the signal approach or callback approach for async functions to be consistent across the whole project.

[jordigcs]

We should decide if we want to take the signal approach or callback approach for async functions to be consistent across the whole project.

I think signals would be the most flexible. You get yields, connections, and more.

[sairam4123]

I'll squash all the commits, once each and every issue is fixed.

[sairam4123]

We should decide if we want to take the signal approach or callback approach for async functions to be consistent across the whole project.

I think signals would be the most flexible. You get yields, connections, and more.

That's why, I've chosen Signals approach.

[sairam4123]

I will squash all commits into one now.