* Change `VPUX` occurences to `NPU`
* Change library for `NPU` device in `api_conformance_helpers.hpp`
* Rename `MYRIAD plugin`
* Switch `HARDWARE_AWARE_IGNORED_PATTERNS` VPU to NPU
* Rename DEVICE_KEEMBAY to DEVICE_NPU
* Rename VPUX_DEVICE_NAME to NPU_DEVICE_NAME
* Rename vpu_patterns to npu_patterns
* Change VPUX occurences to NPU after review
* Remove VPUX device comment
* Change VPUX/vpu to NPU in tests/time_tests
* Rename VPU to NPU in docs after review
* Rename VPU to NPU in tools/pot after review
* Renamed vpu.json to npu.json in tools/pot after review
* Restore CommonTestUtils::DEVICE_KEEMBAY
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Co-authored-by: MirceaDan99 <mircea-aurelian.dan@intel.com>
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