fix: rename panels

[elhb]

Description

Rename the panel files to properly reflect released version names and prerelease version.

Renaming, never released v2.0 to prerelease:

proxiome-v2-immuno-155-v2.0.csv       -> proxiome-v2-immuno-155-prerelease.csv
proxiome-v2-immuno-156-FLAG-v2.0.csv  -> proxiome-v2-immuno-156-FLAG-prerelease.csv
proxiome-v2-immuno-156-FMC63-v2.0.csv -> proxiome-v2-immuno-156-FMC63-prerelease.csv

Renaming, first released version to v2.0:

proxiome-v2-immuno-155-v2.1.csv       -> proxiome-v2-immuno-155-v2.0.csv
proxiome-v2-immuno-156-FLAG-v2.1.csv  -> proxiome-v2-immuno-156-FLAG-v2.0.csv
proxiome-v2-immuno-156-FMC63-v2.1.csv -> proxiome-v2-immuno-156-FMC63-v2.0.csv

Note: that these two operations confuse the git history a bit,
the history incorrectly looks like:

renamed:  proxiome-v2-immuno-155-v2.1.csv        -> proxiome-v2-immuno-155-prerelease.csv
renamed:  proxiome-v2-immuno-156-FLAG-v2.1.csv   -> proxiome-v2-immuno-156-FLAG-prerelease.csv
renamed:  proxiome-v2-immuno-156-FMC63-v2.1.csv  -> proxiome-v2-immuno-156-FMC63-prerelease.csv
modified: proxiome-v2-immuno-155-v2.0.csv
modified: proxiome-v2-immuno-156-FLAG-v2.0.csv
modified: proxiome-v2-immuno-156-FMC63-v2.0.csv

Fixes: PNA-2956

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce it when relevant.

PR checklist:

• This comment contains a description of changes (with reason).
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• If a new tool or package is included, I have updated dependencies in pyproject.toml and cited it properly
• I have checked my code and documentation and corrected any misspellings
• I have documented any significant changes to the code in CHANGELOG.md

[elhb]

To not mess up history I'm renaming the prerelease panels here instead #394

[elhb]

To not mess up history I'm renaming the proximoe-v2 panels here instead #395

[elhb]

Closing this PR in favour of #394 and #395