ci: add Dependabot config and issue templates

Add weekly Dependabot updates for pip, Docker, and GitHub Actions.
Add issue templates for bug reports, feature requests, documentation,
and general feedback.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,35 @@
+---
+name: Bug Report
+about: Report a bug in the system
+title: "[Bug]: "
+labels: bug
+assignees: ''
+---
+
+### Description
+
+A clear and concise description of the bug.
+
+### Steps to Reproduce
+
+1. Go to '...'
+2. Click on '...'
+3. See the error.
+
+### Expected Behavior
+
+Explain what you expected to happen.
+
+### Screenshots
+
+Add screenshots if applicable.
+
+### Environment
+
+- OS: [e.g., Windows, macOS, Linux]
+- Browser: [e.g., Chrome, Firefox]
+- Version: [e.g., 1.0.0]
+
+### Additional Context
+
+Add any other context about the problem here.