Create FrssciMappedData

[audreychatillon]

Create r3BFrssciReader clang-format frssci files clang-format-15 -i for frssci files debug tf / tc mismatch remove auto item from the reader Add online spectra for Frssci at MAPPED LEVEL

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Mention any issue this PR is resolved or is related to.

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Checklist:

• [ ] Rebased against dev branch
• [ ] My name is in the resp. CONTRIBUTORS/AUTHORS file
• [ ] Followed the pull request guidlines and the Git workflow
• [ ] Followed the seven rules of great commit messages