[SDK][VIRTIO][NETKVM] Make VirtIO a separate library (#6280)

* [SDK][VIRTIO][NETKVM] Make VirtIO a separate library

This is to avoid code duplication when more VirtIO drivers are brought in. This will also be used on development of a VirtIO XDDM GPU Driver.

* [VIRTIO] Sync with upstream

sdk/lib/drivers/virtio/CMakeLists.txt

@@ -0,0 +1,17 @@
+
+list(APPEND SOURCE
+    VirtIOPCICommon.c
+    VirtIOPCILegacy.c
+    VirtIOPCIModern.c
+    VirtIORing.c
+    VirtIORing-Packed.c)
+
+add_library(virtio ${SOURCE})
+add_dependencies(virtio xdk)
+
+if(NOT MSVC)
+    target_compile_options(virtio PRIVATE
+        -Wno-unused-function
+        -Wno-unknown-pragmas
+        -Wno-attributes)
+endif()