[CI] Workflow to build and test Triton on Windows

[pbchekin]

Adding initial workflow to run some tests on Windows+A770 daily. Currently tutorials, instrumentation and e2e tests are skipped.

Separate workflows to build and test on Windows:

• build-windows.yml - runs on every PR, builds only.
• build-test-windows.yml - runs daily, builds and tests.

[pbchekin]

Example run: https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/12509009513/job/34897903869
Pass rate (excluding tutorials and instrumentation tests): 89.84%

debug: passed: 0, failed: 2, skipped: 20, xfailed: 0, total: 22, fixme: 0, pass rate (w/o xfailed): 0.0%
interpreter: passed: 6241, failed: 1, skipped: 54, xfailed: 737, total: 7033, fixme: 0, pass rate (w/o xfailed): 99.13%
language: passed: 9601, failed: 1298, skipped: 399, xfailed: 1191, total: 12489, fixme: 0, pass rate (w/o xfailed): 84.98%
line_info: passed: 0, failed: 0, skipped: 6, xfailed: 0, total: 6, fixme: 0, pass rate (w/o xfailed): 0.0%
regression: passed: 113, failed: 0, skipped: 0, xfailed: 160, total: 273, fixme: 0, pass rate (w/o xfailed): 100.0%
runtime: passed: 43, failed: 0, skipped: 1, xfailed: 1, total: 45, fixme: 0, pass rate (w/o xfailed): 97.73%
subprocess: passed: 0, failed: 27, skipped: 1, xfailed: 2, total: 30, fixme: 0, pass rate (w/o xfailed): 0.0%
tutorials: passed: 0, failed: 0, skipped: 0, xfailed: 0, total: 0, fixme: 0, pass rate (w/o xfailed): 0.0%
all: passed: 15998, failed: 1328, skipped: 481, xfailed: 2091, total: 19898, fixme: 0, pass rate (w/o xfailed): 89.84%