fix: load multiple env files by convention

[sweatybridge]

What kind of change does this PR introduce?

Bug fix #1518

What is the current behavior?

Precedence order: https://github.com/bkeepers/dotenv?tab=readme-ov-file#customizing-rails

What is the new behavior?

Feel free to include screenshots if it includes visual changes.

Additional context

Add any other context or screenshots.

[coveralls]

Pull Request Test Coverage Report for Build 8786730835

Details

• 17 of 22 (77.27%) changed or added relevant lines in 1 file are covered.
• 8 unchanged lines in 3 files lost coverage.
• Overall coverage increased (+0.01%) to 58.235%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/utils/config.go	17	22	77.27%

Files with Coverage Reduction	New Missed Lines	%
internal/utils/config.go	1	54.84%
internal/storage/rm/rm.go	2	92.86%
internal/gen/keys/keys.go	5	11.76%

Totals
Change from base Build 8783012926:	0.01%
Covered Lines:	6527
Relevant Lines:	11208

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💛 - Coveralls