enhance: add simde package

[sparknack]

issue: #1157
Add simde package, which can make porting SIMD code to other architectures much easier.

[mergify]

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[sparknack]

issue: #1157

[zhengbuqian]

/lgtm

[alexanderguzhva]

@sparknack rebase to master is needed

[foxspy]

@sparknack pls rebase master to pass ci

[foxspy]

/kind improvement

[foxspy]

/lgtm

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