Support multiple scope

[tokusumi]

Support a part of #35, multiple scopes with all and any combinator. As:

from fastapi_cloudauth import Operator

@app.get("/access-all/")
def secure_access_and(scope=Depends(auth.scope(["role_admin", "super_admin"]))):
    return f"Hello {scope}"

@app.get("/access-any/")
def secure_access_or(scope=Depends(auth.scope(["role_admin", "super_admin"], op=Operator._any))):
    return f"Hello {scope}"

[codecov[bot]]

Codecov Report

Merging #43 (18d4ffb) into master (9e086f2) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #43   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           11        11           
  Lines         1023      1095   +72     
=========================================
+ Hits          1023      1095   +72     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
fastapi_cloudauth/base.py	100.00% <100.00%> (ø)
fastapi_cloudauth/verification.py	100.00% <100.00%> (ø)
tests/test_auth0.py	100.00% <100.00%> (ø)
tests/test_base.py	100.00% <100.00%> (ø)
tests/test_cloudauth.py	100.00% <100.00%> (ø)
tests/test_cognito.py	100.00% <100.00%> (ø)
tests/test_verification.py	100.00% <100.00%> (ø)

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[masus04]

This is exactly what I need, could you add some documentation to the readme for how it is used?

Specifically I don't understand what the auth object is and where I can get it from.

Thank you!