chore : add templates for bug-report, feature-request and pull request

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug Report
+about: Something is broken or not working
+labels: bug
+---
+
+**Describe the bug:**
+<!-- What went wrong? -->
+
+**Error output:**
+<!-- Paste the error here -->
+
+**To reproduce:**
+1. Run `zap ...`
+2. See error
+
+**Expected behavior:**
+<!-- What should have happened? -->
+
+**Environment:**
+- OS:
+- Node version: (run `node -v`)
+- zap-search version: (run `zap --version`)

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature Request
+about: Suggest a new feature or improvement
+labels: enhancement
+---
+
+**What problem does this solve:**
+<!-- Why do you need this? What pain point does it fix? -->
+
+**What you want:**
+<!-- Describe the feature clearly -->
+
+**Example usage:**
+<!-- How would someone use it? -->
+

.github/PULL_REQUEST_TEMPLATE.md

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+## lINK ISSUE (if any) : 
+
+## What does this PR do?
+<!-- Brief description of changes -->
+
+## Type of change
+- [ ] Bug fix
+- [ ] New feature
+- [ ] Breaking change
+- [ ] Documentation update
+
+## How to test?
+<!-- Steps to test your changes locally -->
+1. `npm install -g zap-search`
+2. Run `zap ...`
+
+## Checklist
+- [ ] I have tested this locally
+- [ ] I have updated the README if needed
+- [ ] Build passes (`npm run build`)