Add additional dangerous extensions

[krsakshi]

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Description

Addition of New File Extensions to isfiledangerous.ts

The isfiledangerous.ts is updated to add support for four new file extensions:

• GADGET, SCF, SH, WS

By recognizing more file types, we can better prevent the upload and execution of potentially harmful files.

[PastaPastaPasta]

Hi!

SH and WS file types make obvious sense for why you may want to avoid them. Can you justify or explain why GADGET / SCF? How'd you find / decide to avoid those

Thanks!