feat: Add port option to stencil start

[onur-o7]

What?

Adds port option to stencil start.

Why?

Our company manages multiple dev servers that each run on a unique port using config.stencil.port. It has become challenging to work efficiently on localhost as we need to track different ports. This way, when closing a tab or browser, we won't have to copy the URL or restart the dev server with stencil start -o again.

cc @bigcommerce/storefront-team

[jairo-bc]

I think you can do instead

Suggested change

	const browserSyncPort = initialStencilConfig.port;
	const browserSyncPort = cliOptions.port || initialStencilConfig.port;

[onur-o7]

then we need do change

const updatedStencilConfig = this.updateStencilConfig(
            { initialStencilConfig, port: browserSyncPort},
            storeInfoFromAPI,
);