Add snapcraft.yaml to build and publish it on https://snapcraft.io/store

[swapnilgm]

Currently different linux based distro uses the different package manager. Snapcraft has brought the abstraction over it. I found it very suitable while playing with multiple linux distro. So, this is small addition to this from me.

Now, it is available on snapcraft store under beta channel. Though it is published under my name. I'm fine with moving it under snapcrafter or @clvv for maintaining it.

Signed-off-by: Swapnil Mhamane [email protected]