chore: new request/template specific status interfaces, and a new package for setting conditions

[diranged]

This is mostly code-cleanup in prep for a larger change coming. We create new IRequestStatus and ITemplateStatus interfaces and move some specific methods into them. We've also moved all of the UpdateCondition() calls to the internal/controllers/internal/status package - so that the logic is all confined in one place for what types of strings and values are passed into the conditions.

[coveralls]

Pull Request Test Coverage Report for Build 3714502747

• 29 of 184 (15.76%) changed or added relevant lines in 5 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-5.9%) to 38.272%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/controllers/pod_access_request_controller.go	1	2	50.0%
internal/controllers/exec_access_request_controller.go	0	2	0.0%
internal/controllers/internal/status/set_conditions.go	0	152	0.0%

Files with Coverage Reduction	New Missed Lines	%
internal/controllers/base_request_controller.go	1	98.39%

Totals
Change from base Build 3713926147:	-5.9%
Covered Lines:	762
Relevant Lines:	1991

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💛 - Coveralls

[diranged]

(Ignoring the test coverage numbers dropping... in this case it reflects no actual reduction in testing)

[diranged]

@LaikaN57 Please post-review... I am going to merge this to keep moving forward.