migration guide markdown

[marandaneto]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

creating migration guide markdown

💡 Motivation and Context

people need to know how to migrate from 1.x to 2.x version.

💚 How did you test it?

📝 Checklist

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

🔮 Next steps

[bruno-garcia]

This is great stuff, and it's nice to see the new (unified) API is much cleaner.

[codecov-io]

Codecov Report

Merging #197 into master will increase coverage by 0.03%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #197      +/-   ##
============================================
+ Coverage     57.94%   57.98%   +0.03%     
- Complexity      547      548       +1     
============================================
  Files            72       72              
  Lines          2611     2611              
  Branches        227      227              
============================================
+ Hits           1513     1514       +1     
  Misses          981      981              
+ Partials        117      116       -1

Impacted Files	Coverage Δ	Complexity Δ
...c/main/java/io/sentry/core/DirectoryProcessor.java	74.07% <0%> (+3.7%)	7% <0%> (+1%)	⬆️

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[bruno-garcia]

Let's merge #198 first