Shapeout2

- feat: support accessing private S3 basins (174)
- enh: enable lut selection in analysis view plots (71)
- fix: only allow user to choose "R.exe" in R binary manual search (173)
- enh: correctly show system R binary in settings
- ref: migrate from pyqt5 to pyqt6 (165)
- ref: migrate from pkg_resources to importlib.resources (155)
- setup: support Python 3.12
- setup: new dependency "boto3" via "dclab[s3]""

- enh: enable lut selection to plot isoelasticity lines (71)
- enh: replace findText with findData of comboBox_visc_model
- fix: allow to select R binary when not found automatically
- enh: enable lut selection for emodulus computation in bulk actions (71)
- enh: enable lut selection for emodulus computation (71)
- setup: bump dclab to 0.62.5 (properly resolve path to R executable)

- setup: bump dclab to 0.61.3 (replace rpy2 with wrapper) (73 161)

- BREAKING CHANGE: set default viscosity model for Young's modulus
computation to "buyukurganci-2022", because it is more accurate
and also because it is defined for the "0.83% MC-PBS" medium
- BREAKING CHANGE: remove support for machine learning extensions
(.modc files), because they are not used
- fix: remove leading/trailing slashes for DCOR servers
- setup: bump dclab to 0.61.1 (fix basin-based array access, export from
datasets with internal basins, other minor fixes)

- setup: bump dclab to 0.60.0 (internal basin support, export logs)

- setup: bump dclab to 0.59.1 (mapped-basin now fully supported)