docs: add issue templates for bug reports and feature requests

[mbevc1]

Adds GitHub Issue Forms under .github/ISSUE_TEMPLATE/:

• bug_report.yml
• feature_request.yml
• config.yml linking to docs.kosli.com

Amend existing PR template.

Checklist

• Helm chart (charts/k8s-reporter/) updated, if needed. Note: these changes live in a separate PR
• Terraform provider and related changes (terraform-provider-kosli, terraform-aws-evidence-reporter, terraform-aws-kosli-reporter) updated, if needed
• Docs are autogenerated from CLI help — make sure the help text reflects your changes

[claude]

Claude finished @mbevc1's task in 52s —— View job

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Re-review after latest push ✅

• Read all changed files
• Re-check the previously-flagged blocking issue
• Validate the issue forms

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The blocking issue is resolved. The duplicate - type: checkboxes in feature_request.yml is gone. The form now parses cleanly:

body:
  - type: markdown
    attributes:
      value: Thanks for taking the time to suggest an improvement!
  - type: checkboxes
    id: preflight
    ...

Both forms now open with a consistent friendly markdown intro, and the structure is valid GitHub issue-form YAML. This will render correctly on the New issue page. 👍

Review summary

This is a clean, well-structured docs-only change (issue forms + a PR-template trim). No Go code touched, so the compile/vet/go mod tidy checks don't apply here.

Nicely done:

• Thoughtful form fields — bug_report.yml requiring version and using render: shell for logs, plus the redaction reminders for tokens/secrets, are good touches.
• Preflight "searched existing issues" checkbox on both forms.
• config.yml keeps a docs escape-hatch link and an intentional blank_issues_enabled: true.

Optional, non-blocking (carried over from earlier):

• Verify labels exist: labels: ["bug"] and labels: ["enhancement"] are only auto-applied if those labels already exist in the repo — GitHub silently drops unknown ones. Worth a quick confirm under repo Labels.
• blank_issues_enabled: leaving it true is a valid, deliberate choice (escape hatch); just flagging it's a decision, not a default.

No changes required from me — this looks ready. 🚀