Camera queries can be simplified

[tguichaoua]

Following queries can be simplified using With filter, since FlyCam is just a marker component.

bevy_flycam/src/lib.rs

Lines 59 to 62 in 100a15d

	mut query: Query<(&FlyCam, &mut Transform)>,
	) {
	let window = windows.get_primary().unwrap();
	for (_camera, mut transform) in query.iter_mut() {

bevy_flycam/src/lib.rs

Lines 94 to 97 in 100a15d

	mut query: Query<(&FlyCam, &mut Transform)>,
	) {
	let window = windows.get_primary().unwrap();
	for (_camera, mut transform) in query.iter_mut() {

     mut query: Query<&mut Transform, With<FlyCam>>,
 ) { 
     let window = windows.get_primary().unwrap(); 
     for mut transform in query.iter_mut() { 

[BlackPhlox]

Closed by #16 being merged 🚀