Allow to nest routes with params propogation

[sergeysova]

/org/:orgId/repo/:repoId

const orgRoute = createRoute<{ orgId: string }>();
const repoRoute = orgRoute.createRoute<{ repoRoute: string }>();

1

1. User on the path /org/100/repo/200
2. We call repoRoute({ repoId: 123 })
3. User redirected to /org/100/repo/123

2

1. User on the path /org/100/repo/200
2. We call repoRoute({ repoId: 123, orgId: 5 })
3. User redirected to /org/5/repo/123

[igorkamyshev]

Methods of objects is a big headache for AST awared tools like babel-plugin or eslint-plugin. I suggest making it like the new API of domains in Effector, something like this:

const orgRoute = createRoute<{ orgId: string }>();
const repoRoute = createRoute<{ repoRoute: string }>({ parent: orgRoute });

[velialiev]

Should parent's route params be accessible from child route?

const orgRoute = createRoute<{ orgId: string }>();
const repoRoute = createRoute<{ repoRoute: string }>({ parent: orgRoute });

repoRoute.$params // { orgId, repoRoute } or only { repoRoute } ?