v2.5.1

PR: #65

This release:

• Upgrades the project from .NET 6 to .NET 7 (#64)
• Bumps the parquet.net package from 4.1.0 to 4.4.4 (Some major changes are happening in the library)
• Fixes a bug with NULL value rendering where it could get rendered into the row header column
• Gracefully handles parquet files containing duplicate field names (#68)
• Adds row group information to Thrift metadata in the metadata viewer (#67)
• Option to remember last entered row count (#66 thanks @dannysummerlin ) (Edit -> Remember Record Count)

To be able to use the executable .NET Desktop Runtime 7 must be installed on your machine.