MNN/OpRegister.sh has some grammar error

[kychennv]

one error:
it should use bash instead of sh if you want to use function because some shell version has some different usage for function

one error:
read_dir should be put behind findword

one error:
result=echo $line| awk -F $3 '{ should be : result=echo $line| awk -F '$3' '{

one error:
when fix these error, and run it during cmake .. in the build folder:

Register Op Begin
Start Register CPU
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Start Register Shape
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Start Register Metal
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Register Op End

[jxt1234]

Sorry for the bug. It will be fixed soon.

[li-qing]

use register codegen for iOS only now. relative scripts will run on macOS.