i965: Add a NIR analysis pass for determining when a boolean resolve is needed

i965: Add a NIR analysis pass for determining when a boolean resolve is needed

v2: Fix the spelling of analyze and re-arrange code for better readability
    as per Connor's comments.
v3: Make the naming of things more consistent and add a pile of comments
v4: Stop trying to avoid vectors

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>