* CLEAR_COMMANDS extension is now more of a window into wgpu zero-init
this has mostly implications on the constraints, but also allows a more leaky documentation which makes sense for this non-standard function as there is no other place to look it up

* clear_texture via renderpasses wip

* 3D depth textures are no longer allowed, volumes are always cleared via CPY_DST

* cleanup texture's clear_views

* rename CLEAR_COMMANDS to CLEAR_TEXTURE

* separate clear_texture into reusable & more descriptive parts

* texture clear views are now created ahead of time

* discarded surface fixup goes through new clear_texture method now

* onq ueue texture initialization now goes threw clear_texture
pending inits need to store Stored textures now though, causing more ref count bumping

* texture init on queue_write_texture now also goes through new clear_texture

* transfer functions on commandbuffer use now new texture init route

* merge collect_zero_buffer_copies_for_clear_texture into clear_texture_via_buffer_copies

* clear functions now take TextureInitRange

* Fix clippy lints

* command_encoder_clear_texture no longer takes write lock on texture

* TextureClearMode encodes now is_color

* code cleanup, mostly about `use`

* Handle volume textures in clear_texture_via_render_passes properly

* texture clear no longer requires id::Stored

* init tracking fixes for volumes and init on partial subresource writes

* texture creation enforces COPY_DST only if absolutely necessary

* unrolled functional chain, reduce unsafe scope size

* fix clippy lints

* clear_texture test no longer creates 1D textures

see gfx-rs#2323

* 3D textures are no longer cleared as render target since this isn't supported on Metal

* fix deno building issue, fix formatting

* TextureInner::Surface can now be zero initialized