Change Gate constructor to structure like intead of tuple like

[y-yu]

• We use tuple like constructors to instantiate Gate's values now
• For example Controlled(u32, u32, unsafe extern "C" fn(u32, u32, *mut CTYPE, u64)), the 1st and 2nd parameters are the same type u32
  • If we would make a mistake the order of the 1st and 2nd parameters of Controlled, it will be an runtime error not to fix easy
• So I think it would be better to use labeled constructor like Controlled { control_qubit_index: x, target_qubit_index: y ...} instead of the current tuple like constructor
• And I also implement custom tuple like constructors for Single and Rotation
  • Because their arguments ordering is obvious

[coveralls]

Pull Request Test Coverage Report for Build 3008859935

• 13 of 38 (34.21%) changed or added relevant lines in 2 files are covered.
• 5 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.7%) to 80.085%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/binding.rs	11	14	78.57%
src/gate.rs	2	24	8.33%

Files with Coverage Reduction	New Missed Lines	%
src/binding.rs	1	81.82%
src/gate.rs	4	9.72%

Totals
Change from base Build 2911580732:	-0.7%
Covered Lines:	378
Relevant Lines:	472

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💛 - Coveralls

[y-yu]

@CKiumi
I removed clippy warnings. Please check 🙏