feat(skore-hub-project): Upload nested reports from the cross-validation report

[thomass-dev]

Closes #2049.

[github-actions]

Coverage Report for skore-hub-project/

File	Stmts	Miss	Cover	Missing
skore-hub-project/src/skore_hub_project
__init__.py	22	1	95%	39
protocol.py	27	0	100%
skore-hub-project/src/skore_hub_project/artefact
__init__.py	2	0	100%
artefact.py	36	0	100%
serializer.py	28	0	100%
upload.py	36	4	88%	169, 171–172, 174
skore-hub-project/src/skore_hub_project/authentication
__init__.py	0	0	100%
login.py	19	1	94%	26
logout.py	5	0	100%
token.py	18	0	100%
skore-hub-project/src/skore_hub_project/client
__init__.py	0	0	100%
api.py	47	0	100%
client.py	64	0	100%
skore-hub-project/src/skore_hub_project/media
__init__.py	6	0	100%
data.py	43	2	95%	26, 28
feature_importance.py	46	0	100%
media.py	18	0	100%
model.py	15	0	100%
performance.py	55	0	100%
skore-hub-project/src/skore_hub_project/metric
__init__.py	10	0	100%
accuracy.py	32	0	100%
brier_score.py	32	0	100%
log_loss.py	34	0	100%
metric.py	49	1	97%	23
precision.py	60	0	100%
r2.py	32	0	100%
recall.py	60	0	100%
rmse.py	34	0	100%
roc_auc.py	34	0	100%
timing.py	87	4	95%	51–52, 113–114
skore-hub-project/src/skore_hub_project/project
__init__.py	0	0	100%
project.py	97	3	96%	200, 315, 343
skore-hub-project/src/skore_hub_project/report
__init__.py	3	0	100%
cross_validation_report.py	68	1	98%	210
estimator_report.py	18	0	100%
report.py	46	0	100%
TOTAL	1183	17	98%

Tests	Skipped	Failures	Errors	Time
135	0 💤	0 ❌	0 🔥	1m 15s ⏱️

[thomass-dev]

You can test the fix on https://skore.probabl.dev/Thomas%20S./issues-2049/cross-validations/37#performance and the snippet:

import os

os.environ["SKORE_HUB_URI"] = "https://skh.k.probabl.dev/"

from skore import Project

project = Project("hub://Thomas S./issues-2049")

cross_validation = project.get("skore:report:cross-validation:37")
nested_estimator_report = project.get("skore:report:estimator:779")

where skore:report:estimator:779 is a nested estimator report in the cross-validation report skore:report:cross-validation:37.

[rouk1]

Looks good to me !