[ENH] download_all_regression only downloads the original 19 TSER datasets

[TonyBagnall]

Describe the feature or idea you want to propose

loading a specific regression problem with load_regression is fine, but download_all_regression only downloads the original 19 data, not the 63.

rom aeon.datasets import load_regression, download_all_regression
from aeon.datasets.tser_datasets import tser_soton

print(" List of the 63 datasets :", tser_soton)
# Download the AluminiumConcentration dataset and load combined train and test data
X, y = load_regression("BarCrawl6min")
print(X.shape, y.shape)

# Load the shipped Covid3Month dataset train and test splits
trainX, trainy = load_regression("Covid3Month", split="train")
testX, testy = load_regression("Covid3Month", split="test")
print(trainX.shape, trainy.shape)
print(testX.shape, testy.shape)
# Download all in a zip file and extract to C:\Temp (or other specified path)
# download_all_regression(extract_path="C:\\Temp\\")
print("Downloaded all datasets")

Describe your proposed solution

It should pull them all down, need to find if there is a full zip on tsc.com

Describe alternatives you've considered, if relevant

No response

Additional context

No response