Provide more customization features for BlazorWebView & HybridWebView

[BethMassi]

We have a lot of requests for certain levels of customization of the MAUI BlazorWebView and HybridWebView controls. We'll use this issue to track these related requests so we can think about how we can implement them in a consistent way in both of these controls.

Intercepting requests:

• #11382 Suggests adding an event handler to intercept the request to add request headers, block requests, or modify requests & responses in BlazorWebView. Also add for HybridWebView.
• #25867 Suggests a similar thing for HybridWebView but limited to a proxy. This should be covered by the above. See Intercepting requests from BlazorWebView #11382
• #25784 Suggests a feature for catching and forwarding device permission requests.

Navigation:

• #24821 Suggests adding a feature that will allow deep links/child routes to URLs

Initialization:

• #26767 Suggests adding initialization methods for custom configuring HybridWebView
• #23747 Suggests methods for playsinline, autoplay, and other playback configuration options