Common custom fingerprint rules

### Problem Statement I have several microservices on my project. All of them can face some specific network errors and I want these errors to be processed in the same way. In order to not mix these specific errors with other network errors, I need to add custom fingerprint rules. However, I have to add the same rule explicitly into each project in Sentry, which looks weird. Need ability to specify custom fingerprint rules for multiple projects somehow. ### Solution Brainstorm _No response_ ### Product Area Processing