fix: use crypto/rand package to generate otp chars

[kushsharma]

• added documentation on how to use webhooks

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
frontier	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 8, 2024 5:13am

[coveralls]

Pull Request Test Coverage Report for Build 8996623019

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 8 of 22 (36.36%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 9.422%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
core/authenticate/strategy/mail_link.go	0	1	0.0%
pkg/crypt/random.go	7	8	87.5%
core/event/processor.go	0	6	0.0%
core/invitation/service.go	0	6	0.0%

Totals
Change from base Build 8980510404:	0.0%
Covered Lines:	9560
Relevant Lines:	101469

---

💛 - Coveralls