DOI and Badges (#4)

# DOI and Badges

## ♻️ Current situation & Problem
This PR updates the packages DOI and adds SPI and Zenodo badges.

## ⚙️ Release Notes 
* Add Badges
* Update DOI

## 📝 Code of Conduct & Contributing Guidelines 

By submitting creating this pull request, you agree to follow our [Code
of
Conduct](https://github.com/StanfordSpezi/.github/blob/main/CODE_OF_CONDUCT.md)
and [Contributing
Guidelines](https://github.com/StanfordSpezi/.github/blob/main/CONTRIBUTING.md):
- [x] I agree to follow the [Code of
Conduct](https://github.com/StanfordSpezi/.github/blob/main/CODE_OF_CONDUCT.md)
and [Contributing
Guidelines](https://github.com/StanfordSpezi/.github/blob/main/CONTRIBUTING.md).

CITATION.cff

@@ -16,5 +16,5 @@ authors:
   given-names: "Andreas"
   orcid: "https://orcid.org/0000-0002-1680-237X"
 title: "SpeziNotifications"
-doi: 10.5281/zenodo.7538165
+doi: 10.5281/zenodo.14003714
 url: "https://github.com/StanfordSpezi/SpeziNotifications"

README.md

@@ -12,6 +12,9 @@ SPDX-License-Identifier: MIT
 
 [![Build and Test](https://github.com/StanfordSpezi/SpeziNotifications/actions/workflows/build-and-test.yml/badge.svg)](https://github.com/StanfordSpezi/SpeziNotifications/actions/workflows/build-and-test.yml)
 [![codecov](https://codecov.io/gh/StanfordSpezi/SpeziNotifications/graph/badge.svg?token=dWaDzUBFoV)](https://codecov.io/gh/StanfordSpezi/SpeziNotifications)
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.14003714.svg)](https://doi.org/10.5281/zenodo.14003714)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2FStanfordSpezi%2FSpeziNotifications%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/StanfordSpezi/SpeziNotifications)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2FStanfordSpezi%2FSpeziNotifications%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/StanfordSpezi/SpeziNotifications)
 
 Simplify User Notifications in Spezi-based applications.