Allow adding module with multiple types

[akshay-ap]

Fixes #103

Changes in PR:

• Return moduleTypes information from Registry. Each enabled bit in the uint8 indicates a module type.
  Updated function signature:

  function check(address module) external view returns (uint64 listedAt, uint64 flaggedAt, uint8 moduleTypes);
  

• Update tests
• Update manager to use moduleType information
• Define constants for module types
  Each module type is a power of 2.
• Documentation
• Add _addModule(address,uint8) as internal function to avoid duplicate logic in TestSafeProtocolRegistryUnrestricted

Needs update in Protocol specs

[github-actions]

Pull Request Test Coverage Report for Build 6316718378

• 16 of 16 (100.0%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 6262748768:	0.0%
Covered Lines:	187
Relevant Lines:	187

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💛 - Coveralls