Issue: feat(users): Send welcome to community email in magic link signup

Send [this](https://www.figma.com/design/lhmTvW2vuc2p5B4ZvsEOTw/Email-Tempalte-Design?node-id=0-1&t=OKWmXqVOsidKUk7y-1) email when user signs up with magic link.

Resolution: <think>
PR Context:
- Title: feat(users): Send welcome to community email in magic link signup
- Merged: 2024-11-26T09:10:41Z
- Files changed: 4 files
- Commits: 4 commits

Implementation approach:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [ ] New feature
- [x] Enhancement
- [ ] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->
Magic link will send one more email along with magic link email if user is signing up.

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application configu
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** feat(users): Send welcome to community email in magic link signup (#6639)
Co-authored-by: hyperswitc
Files to modify:


**crates/router/src/consts/user.rs**
  Modify existing code

**crates/router/src/core/user.rs**
  Modify existing code

**crates/router/src/services/email/types.rs**
  Add:
    - function: private::get_email_data
    - struct: private::WelcomeToCommunity
    - impl: impl EmailData for WelcomeToCommunity