MediaRecorder spec compliance: add options and isTypeSupported

[orottier]

To future proof the v1 API we should change the constructor from

pub fn new(stream: &MediaStream) -> MediaRecorder

to

pub fn new(stream: &MediaStream, options: MediaRecorderOptions) -> Result<MediaRecorder, DomException>

with

#[non_exhaustive]
#[derive(Debug, Clone, Default)]
pub struct DomException {
    pub name: String,
    pub message: String,
}

#[non_exhaustive]
#[derive(Debug, Clone, Default)]
pub struct MediaRecorderOptions {
    pub mime_type: String, // use "" as default
}

fn is_type_supported(mime_type: String) -> bool;