Relax lifetimes on TextRenderer::render()

[Selicre]

The method's lifetimes are far too restrictive, which makes the method really annoying to use. I'm not sure if you have any plans to make use of these restrictions in the future, but I don't see why you would need to.

[grovesNL]

Could you explain a use case that can't use the existing lifetimes? We're basically trying to follow the pattern in https://github.com/gfx-rs/wgpu/wiki/Encapsulating-Graphics-Work#render

[ScanMountGoat]

Could you explain a use case that can't use the existing lifetimes?

I'm having issues trying to get code to compile with this crate when defining callbacks with wgpu 22.1.0, glyphon 0.6.0, and egui 0.29.0 due to the lifetime restrictions. The WGPU lifetime changes are explained in this PR: emilk/egui#5149

[Selicre]

This primarily matters when you erase the lifetime on the pass using RenderPass::erase_lifetime(). It will effectively require all your lifetimes to be 'static, which is usually not desirable.

[grovesNL]

Ah ok, that makes sense - if you're erasing the render pass lifetime to 'static then this will break for sure.

erase_lifetime wasn't supported in earlier wgpu versions so it wasn't a problem until now. Let's go ahead with the elided lifetimes in that case.

[grovesNL]

Thanks!