Alfasim-sdk

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* Add new API functions related unit cell model friction factor hooks.

* Add two new hooks to calculate the unit cell model friction factor for stratified and annular flows.

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* Adopt terminology gas-oil-water

* Add a new hook to evaluate the thickness of the deposited layer at the inside of the pipeline walls and it accounts for the diameter reduction.

* Rename HydrodynamicModelType items from snake_case to CamelCase, a backward compatibility option is kept.

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* Add "required-alfasim-sdk" key on plugin.yaml to identify the required version of alfasim-sdk.

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* First release.