docs: Update with GLES3.2 entries and status

docs: Update with GLES3.2 entries and status

V2: -Change to "not started" for most entries
    -Add status for multisample_2d_array
    -Change shader_multisample_interpolation to "not_stared"

V3 (idr): Move the GLES 3.2 section after the "Additional functions"
section from GLES 3.1.  Note that GL_KHR_texture_compression_astc_hdr is
done for i965 on gen9+ hardware.  Note that GL_OES_shader_io_blocks is
based on some features from GLSL 1.50.

Signed-off-by: Thomas Helland <thomashelland90@gmail.com>
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com> [v2]
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>