Modernize codebase for PyTorch 2.8+ compatibility, fix deprecated API calls, and update sktime integration#76

Copilot wants to merge 3 commits intomastergzerveas/mvts_transformer:masterfrom

copilot/fix-5efe2b8d-d66e-4604-a691-65ec059155fagzerveas/mvts_transformer:copilot/fix-5efe2b8d-d66e-4604-a691-65ec059155faCopy head branch name to clipboard