fix: adjust api key handling for logflare, studio, and vecor

[Ziinc]

This PR fixes the API key handling for logflare, vector, and studio

• all services uses a private access token, since this is not meant for production purposes we don't bother generating another key to reduce complexity.
• vector config now passes logflare api key through headers instead of url, to avoid logging it

This PR requires a subsequent version bump after supabase/supabase#36169 is merged

• verify locally that all works

[coveralls]

Pull Request Test Coverage Report for Build 15445645132

Details

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• 5 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.03%) to 54.84%

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Files with Coverage Reduction	New Missed Lines	%
internal/gen/keys/keys.go	5	12.9%

Totals
Change from base Build 15445566154:	-0.03%
Covered Lines:	5977
Relevant Lines:	10899

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💛 - Coveralls

[sweatybridge]

working as expected after updating studio

there are errors affecting edge function and cron logs. but those can be resolved separately