[GPU] Update onednn to v2.6-pc (openvinotoolkit#9479)

[README.md] change latest release to 2021.4.2

Install rules for static libraries case (openvinotoolkit#8384)

* Proper cmake install for static libraries case

* Added an ability to skip template plugin

* Added install rules for VPU / GPU

* Install more libraries

* Fixed absolute TBB include paths

* Disable GNA

* Fixed issue with linker

* Some fixes

* Fixed linkage issues in tests

* Disabled some tests

* Updated CI pipelines

* Fixed Windows linkage

* Fixed custom_opset test for static casr

* Fixed CVS-70313

* Continue on error

* Fixed clanf-format

* Try to fix Windows linker

* Fixed compilation

* Disable samples

* Fixed samples build with THREADING=SEQ

* Fixed link error on Windows

* Fixed ieFuncTests

* Added static Azure CI

* Revert "Fixed link error on Windows"

This reverts commit 78cca36.

* Merge static and dynamic linux pipelines

* Fixed Azure

[README.md] change latest release to 2021.4.1

omz layout fix (openvinotoolkit#6450)

* fix layout

* 4

Publishing 2020.3.2 LTS content (openvinotoolkit#5290)

* Publishing 2020.3.2 LTS content

Feature/benchmarks 2021 3 ehl (openvinotoolkit#5191)

* Added EHL config

* Updated graphs

* improve table formatting

* Wrap <iframe> tag with \htmlonly \endhtmlonly to avoid build errors

* Updated graphs

* Fixed links to TDP and Price for 8380

[README.md] change latest release to 2021.3

[README.md] change latest release to 2021.2 (openvinotoolkit#3628)

Publishing 2020.3.1 LTS content (openvinotoolkit#3108)