nncase v2.7.0

New features

• Add accuracy test: #1140
• Refactor Quantize: #1144
• Feature/k800 qemu: #1145
• GNNE-1980 Xpu Sram Codegen: #1148
• GNNE-1714:adjust for processor counter: #1150

Bug fixes and performance improve

• Fix/retinaface similarity bugs: #1141
• Fix memory leak: Avoid disposing python stream in finalizer thread: #1142
• Fix ordering of PytestCalibrationDatasetProvider: #1143
• Fix Reshape: #1147
• Fix Studio: #1151, #1152
• Add clear device mem pool util: #1153