docs: Add fromPromise to the API documentation

[christiangelone]

• It would be cool a transformation from promise to task

something like

const task: Task<ValueType, ErrorType> = Task.fromPromise<ValueType, ErrorType>(promise);

[gillchristian]

There's fromPromise already 😅

task/src/task/task-from-promise.ts

Lines 1 to 13 in 86dfbf9

	import { Task } from './task';
	declare module './task' {
	// tslint:disable-next-line:interface-name
	namespace Task {
	function fromPromise<TResult, EResult = any> (promise: Promise<TResult>): Task<TResult, EResult>;
	}
	}
	Task.fromPromise = function <TResult, EResult = any> (promise: Promise<TResult>): Task<TResult, EResult> {
	return new Task((outerResolve, outerReject) => {
	promise.then(outerResolve, err => outerReject(err));
	});
	};

[hrajchert]

I'll leave it open and change its name to add fromPromise to the API documentation