feat: add default value for the 'silent' func

[maiyajj]

No description provided.

[Suor]

This API is non-traditional, in the spirit of the rest of the lib one would expect silent() to be a decorator with an optional argument:

silent_func = silent(func)
silent_func_with_def = silent(default=42)(func)

# or
@silent(default=42)
def func(...):
    return ...

But then it's quite easily replaced with ignore(Exception, 42), which only slightly longer. And silent(default)(func) will be an ambiguous API if default is callable.