10 restructure the wasm deploy tool to be used as cli tool

[gianfra-t]

Minor restructure to allow the tool to be used as a globally installed npm package cli tool. Branched from #22.

Readme file show the proposed steps to use it (wasm-deploy needs to be deployed to npm to work.
For now, to test locally:

• Cd to api-solang and build using npm run build
• Build the cli tool in the root folder with npm run build
• Run npm install -g .
• When running wasm-deploy init <project> an error will show since the package is not on npm. Run npm link wasm-deploy to overcome this.
• Install typescript in the project npm install typescript

[TorstenStueber]

@gianfra-t part of this PR should be that any references to Nabla are completely removed. This means that the Nabla deployment commands should be moved to the Nabla repository instead.

This is part of this ticket in the Nabla contract repository: https://github.com/0xamberhq/contracts/issues/73.

Once the above ticket is complete, we can continue with this PR here.