Replace templated spans by ranges

src/glow/objects/ArrayBuffer.hh

src/glow/objects/AtomicCounterBuffer.hh

src/glow/objects/ElementArrayBuffer.hh

src/glow/objects/Framebuffer.hh

src/glow/objects/Program.hh

src/glow/objects/Shader.hh

src/glow/objects/ShaderStorageBuffer.hh

src/glow/objects/Texture1D.hh

src/glow/objects/Texture1DArray.hh

src/glow/objects/Texture2D.hh

src/glow/objects/Texture2DArray.hh

src/glow/objects/Texture3D.hh

src/glow/objects/TextureBuffer.hh

src/glow/objects/TextureCubeMap.hh

src/glow/objects/TextureCubeMapArray.hh

src/glow/objects/TextureRectangle.hh

src/glow/objects/VertexArray.hh

src/glow/objects/raii/BoundArrayBuffer.hh

src/glow/objects/raii/BoundAtomicCounterBuffer.hh

src/glow/objects/raii/BoundElementArrayBuffer.hh