Add Timber and Fragment integrations if they are present on the classpath

[romtsn]

📜 Description

• Checks if sentry-android-timber and sentry-android-fragment are on the classpath and adds the integrations automatically.
• Uses default ctors of those. Note, that for fragment we switched the flag to enable performance by default.

💡 Motivation and Context

Q1 goal

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code
• I added tests to verify the changes
• I updated the docs if needed
• No breaking changes

🔮 Next steps

[codecov-commenter]

Codecov Report

Merging #1936 (f7f84f4) into main (db05017) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #1936   +/-   ##
=========================================
  Coverage     75.60%   75.60%           
  Complexity     2270     2270           
=========================================
  Files           225      225           
  Lines          8072     8072           
  Branches        852      852           
=========================================
  Hits           6103     6103           
  Misses         1558     1558           
  Partials        411      411           

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[audkar]

static final String SENTRY_FRAGMENT_INTEGRATION_CLASS_NAME =
      "io.sentry.android.fragment.FragmentLifecycleIntegration";

  static final String SENTRY_TIMBER_INTEGRATION_CLASS_NAME =
      "io.sentry.android.timber.SentryTimberIntegration";

Are these class names excluded from R8 obfuscation? Otherwise these might not be found in Android Release builds at runtime.

[romtsn]

@marandaneto addressed everything, PTAL once again

[romtsn]

static final String SENTRY_FRAGMENT_INTEGRATION_CLASS_NAME =
      "io.sentry.android.fragment.FragmentLifecycleIntegration";

  static final String SENTRY_TIMBER_INTEGRATION_CLASS_NAME =
      "io.sentry.android.timber.SentryTimberIntegration";

Are these class names excluded from R8 obfuscation? Otherwise these might not be found in Android Release builds at runtime.

@audkar thanks for raising the concern. Yes, we ship those modules with proguard rules that keep those classes, see here and here