feat: add badge to README.md

README.md

+[![Maintainability Rating](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=sqale_rating)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Security Rating](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=security_rating)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Reliability Rating](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=reliability_rating)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=alert_status)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Bugs](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=bugs)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Vulnerabilities](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=vulnerabilities)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Code Smells](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=code_smells)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Technical Debt](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=sqale_index)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Lines of Code](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=ncloc)](https://sonarcloud.io/dashboard?id=pamn_client)
+[![Duplicated Lines (%)](https://sonarcloud.io/api/project_badges/measure?project=pamn_client&metric=duplicated_lines_density)](https://sonarcloud.io/dashboard?id=pamn_client)
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 # Pamn
 
 This project was generated with [Angular CLI](https://github.com/angular/angular-cli) version 10.1.3.