feat: added policy title and creator

[kushsharma]

• user email can be fetched from frontier jwt using email claim with the use of custom email header to identify the user

[coveralls]

Pull Request Test Coverage Report for Build 6867870240

• 14 of 30 (46.67%) changed or added relevant lines in 4 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.09%) to 73.868%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
api/handler/v1beta1/policy.go	6	10	60.0%
pkg/auth/frontier.go	0	4	0.0%
pkg/auth/email.go	0	8	0.0%
<!--	Total:	14	30	46.67%	-->

Files with Coverage Reduction	New Missed Lines	%
api/handler/v1beta1/approval.go	2	98.53%
<!--	Total:	2		-->

Totals
Change from base Build 6593267487:	-0.09%
Covered Lines:	8678
Relevant Lines:	11748

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💛 - Coveralls