Extend _tensor_elementwise_impl (unary) part 3

[vlad-perevezentsev]

This PR extends _tensor_elementwise_impl with the remaining unary functions:

cbrt,
exp2,
proj,
real,
reciprocal,
round,
rsqrt,
sign,
signbit,
sin,
sinh,
sqrt,
square,
tan,
tanh,
trunc,

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[github-actions]

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