Following #90236, adding `select` to linalg as `arith.select`. No
implicit type casting.
OpDSL doesn't expose a type restriction for bool, but I saw no reason in
adding it (put a separate symbolic type and check the semantics in the
builder).
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Co-authored-by: Renato Golin <rengolin@systemcall.eu>
Co-authored-by: Maksim Levental <maksim.levental@gmail.com>
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