Add cacheDirPath to Options

[philipphofmann]

The SDK uses the Library/Cache folder caching SDK and SentryCrash data. The downside of this is that the OS might delete data in this folder when it needs more disk space or the user can as well delete these caches. We can add something like a cacheDirPath, as we already have it in sentry-java to give our users the possibility to change the location of our cache data. A customer of ours already requested this.

[bruno-garcia]

Name used in other SDKs:

sentry-native: sentry_options_set_database_path
sentry-android/java: cacheDirPath
sentry-dotnet: CacheDirectoryPath

[philipphofmann]

The Swift and Objective-C way to go would be to name it cacheDirectoryPath.

[mattjohnsonpint]

This will be useful for getsentry/sentry-dotnet#1282 also. Can we bump the priority please? Thanks.

[philipphofmann]

@mattjohnsonpint, the other hybrid SDKs don't need this feature; why would it be useful for getsentry/sentry-dotnet#1282?

[mattjohnsonpint]

It's not absolutely required, as long as the cache paths are distinct between the different SDKs so they don't step on each other. But being able to specify the cache path gives me better control over that.

[philipphofmann]

We found a workaround for .NET, and we don't need to align with the other SDKs just to align. To keep the SDK smaller and simpler, we close this for now. We can always reopen if needed.