api proposal: add "service" method

[betula]

The "service" method makes a Proxy.

// Old one

const GateService = () => {
  const line = createLine('message');

  return {
    line
  }
}

export const initGate = () => provide(GateService);
export const getGate = () => provide(GateService).line;

// But better

export const gateService = service(() => {
  const line = createLine('message');

  return {
    line
  }
})

export const initGate = gateService.init;
export const getGate = () => gateService.line; // autoinit if not exists here

// And we can use it directly

import { gateService } from './gate-service';

// ...

Next improvement: add automatic getters for all '$' dollar started properties.

const connectService = service(() => {
  $hasError = box(false);
  // ...
  return {
    $hasError
  }
});


console.assert(connectService.hasError === false) // its will be greatly helpfull

It should be not a proxy -> it should be added real getters.
hmmm, think about more. ...I see performance problems with proxy