NPUW: Bring back unpack and partitioning unit tests for NPUW

[AsyaPronina]

This PR adds unit tests on

1. unpack routines within NPUW
2. main online partitioning functionality (smaller unit tests on Graph, Group, Repeated, etc will be added separately)

Brings back #25780

Local run:

[----------] Global test environment tear-down
[==========] 334 tests from 6 test suites ran. (3379 ms total)
[  PASSED  ] 334 tests.

[dmatveev]

this may trigger a warning but let's see

[dmatveev]

Let's enable tests if only AVX2 is present (check via #ifdef)

[smirnov-alexey]

Done. Added #ifdef __AVX2__

[dmatveev]

Let's enable tests if only AVX2 is present (check via #ifdef)

[dmatveev]

@ilya-lavrenov is that the right way to detect AVX2, or OpenVINO comes with its own compile definition?

[esmirno]

@dmatveev i think we should stick to openvino form or forced disabling based on cmake configs in form of one of macro

set(_DEFINE_SSE42    "HAVE_SSE42"   ${_DEFINE_ANY})
set(_DEFINE_AVX      "HAVE_AVX"     ${_DEFINE_SSE42})
set(_DEFINE_AVX2     "HAVE_AVX2"    ${_DEFINE_AVX})
set(_DEFINE_AVX512F  "HAVE_AVX512F" ${_DEFINE_AVX2})

for our tests, #ifdef HAVE_AVX2 should be enough, while tests code itself can be rewritten in ref without intrinsics,

[smirnov-alexey]

Could be HAVE_AVX2

[dmatveev]

Removed from auto-merge, two builds are failing

[smirnov-alexey]

All builds are green, adding to auto-merge