feature request: provide current resource path to model and resourceLoader

During runtime resources can be loaded recursively.

## Example

For example if we would have the following resource loading:

```
main.htl
-> child.htl
-> grandchild.htl
-> grandchild.htl
```

click here to expand markup example

main.htl
```

```

and in resourceItem you have

child.htl
```

```

grandchild.htl

```

${myModel.title}
```

## Motivation

This resource path information is often used to return the according model data.
In the example above both `grandchild.htl` could render different data from the same model name.

## API

It would be most convenient if the resourcePath could be an array e.g. `['root', 'resourceItem', 'childResourceItem1']` and would be available at two locations:

### `compiler.withModuleImportGenerator`

Although the `resourcePath` is a runtime only value we could still provide it to the Model mapper e.g.:

```js
compiler.withModuleImportGenerator((baseDir, varName, moduleId) => const ${varName} = function Model() { ...
```

could be changed to:

```js
compiler.withModuleImportGenerator((baseDir, varName, moduleId) => const ${varName} = function Model(resourcePath) { ...
```

### `runtime.withResourceLoader`

Inside the runtime it would also be nice to provide this resourceParameter for resource loading:

```js
runtime.withResourceLoader((runtime, resourceName, resourceParameters) => {
```

```js
runtime.withResourceLoader((runtime, resourceName, resourceParameters, resourcePath) => {
```