Type-safe HookManager

[molenzwiebel]

I need to take a look if TypeScript offers a convenient way to add type-safe hooks, but otherwise we will probably need overloads taking a string literal as type and delegating them to the hook, like this:

// Current code, renamed to _hook but stays unchanged.
_hook(plugin: Plugin, hookName: string, callback: Callback, ...matchers: any[]) {}

// More specific overloads per hook.
hook(plugin: Plugin, hookName: "http", callback: Callback, matcher: RegExp | string) {
    this._hook(plugin, hookName, callback, matcher);
}

// etc...
hook(plugin: Plugin, hookName: "ember-component", callback: Callback, matcher: string) {
    this._hook(plugin, hookName, callback, matcher);
}