implemented inApp prefix for stacktraces

[marandaneto]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

Implements inApp prefix for stack traces, so if the stack traces contain our packages, the noise is hidden and the user may focus on the real problem.

💡 Motivation and Context

stack traces contain noise if our packages appear there.

💚 How did you test it?

unit testing

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• All tests passing

🔮 Next steps

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@460dbd3). Click here to learn what that means.
The diff coverage is 72.09%.

@@            Coverage Diff            @@
##             master      #75   +/-   ##
=========================================
  Coverage          ?   49.33%           
  Complexity        ?      360           
=========================================
  Files             ?       59           
  Lines             ?     1792           
  Branches          ?      143           
=========================================
  Hits              ?      884           
  Misses            ?      856           
  Partials          ?       52

Impacted Files	Coverage Δ	Complexity Δ
.../main/java/io/sentry/core/SentryThreadFactory.java	100% <100%> (ø)	10 <1> (?)
...in/java/io/sentry/core/SentryExceptionFactory.java	91.66% <100%> (ø)	7 <1> (?)
...c/main/java/io/sentry/core/MainEventProcessor.java	58.33% <50%> (ø)	4 <1> (?)
...re/src/main/java/io/sentry/core/SentryOptions.java	78.2% <50%> (ø)	38 <2> (?)
...n/java/io/sentry/core/SentryStackTraceFactory.java	93.1% <88.88%> (ø)	11 <8> (?)

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