feat(data/matrix/basic): add bit0, bit1 lemmas (#2987)
feat(data/matrix/basic): add bit0, bit1 lemmas (#2987)

Based on a conversation in
https://leanprover.zulipchat.com/#narrow/stream/113489-new-members/topic/Matrix.20equality.20by.20extensionality
we define simp lemmas for matrices represented by numerals.
This should result in better representation of scalar multiples of
 `one_val : matrix n n a`.

Co-authored-by: Scott Morrison <63f04b4d96235eb042cc46d94f14d241d2a26722@gmail.com>





leanprover-community/mathlib,leanprover-community/mathlib