Add unauthorizedRedirect

[cleptric]

Quick draft to add an unauthorizedRedirect option to the RequestAuthorizationMiddleware. Some open questions:

• Shall we handle a 404 by the RoutingMiddleware?
• Is a simple string enough, or do we need Router support?
• Shall we append the previous URL to the redirect?

[dereuromark]

Looks like a good idea, yeah.

[codecov[bot]]

Codecov Report

Merging #131 into master will decrease coverage by 0.19%. The diff coverage is 66.66%.

@@             Coverage Diff              @@
##             master     #131      +/-   ##
============================================
- Coverage     95.83%   95.64%   -0.20%     
- Complexity      195      196       +1     
============================================
  Files            18       18              
  Lines           456      459       +3     
============================================
+ Hits            437      439       +2     
- Misses           19       20       +1     

Impacted Files	Coverage Δ	Complexity Δ
src/Policy/MapResolver.php	100.00% <ø> (ø)	14.00 <0.00> (ø)
src/Middleware/RequestAuthorizationMiddleware.php	94.73% <66.66%> (-5.27%)	6.00 <0.00> (+1.00)	:arrow_down:

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[dereuromark]

Do we still want to finish this?

[othercorey]

Can't this be done using the AuthorizationMiddleware exception handling? That can redirect from a ForbiddenException.

[dereuromark]

@cleptric What do you think?

[saeideng]

Can't this be done using the AuthorizationMiddleware exception handling?

Is a simple string enough, or do we need Router support?

Router support will available after merging #192 so do mentioned PR can cover this PR?

[ADmad]

Redirection is now possible through 'unauthorizedHandler` added in #211