* introduce new wgpu configuration option to allow configuring wgpu renderer
* use new options with wgpu web painter
* use on_surface_error callback
* changelog update
* cleanup
* changelog and comment fixes
* using a shared vertex & index buffer in wgpu renderer
capacity each doubles when exceeded.
This change means a lot less allocation during egui's lifetime.
* changelog update
* minor code cleanup and changelog fix
* fix linter issue
* wgpu renderer now always requires a RenderPass being passed in
This also implies that it no longer owns the depth buffer! (why would it anyways!)
* wgpu-renderer now passes a command encoder to prepare
* add changelog entries
* fixup changelogs, fix variable name
