Implement CaptureVertexPointerES1 that captures specific GLES1 vertex
pointer functions depending on the attribute index.

Use GLES1 capture functions in CaptureVertexArrayData by detecting the
current context version.

Implement VertexArrayType function in GLES1Renderer to get a
ClientVertexArrayType enum from a vertex attrib index.

Bug: angleproject:5893
Change-Id: I442b2e29475ca817860388cafc120db90a0fb9c4
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2846838Reviewed-by: Cody Northrop <cnorthrop@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>