svn2gitnet: Add Version 1.0.0

[reicheltp]

Adds Version 1.0.0 of svn2gitnet - A cross-platform svn to git migrator. The original svn2git (ruby gem) has several problems on windows. This re-implementation is a reliable way to run snv to git migrations on Windows systems.

• [x] I have read the Contributing Guide.

[reicheltp]

/verify

[github-actions[bot]]

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svn2gitnet

• [x] Description
• [x] License
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