Added requirements for setuptools (openvinotoolkit#812)

setuptools<43.0.0 could not find suitable distribution for 'tensorflow==2.4.0'

setup.py

@@ -26,6 +26,17 @@
 with open("{}/README.md".format(here), "r") as fh:
     long_description = fh.read()
 
+if "--tf" in sys.argv:
+    import setuptools
+    from pkg_resources import parse_version
+    setuptools_version = parse_version(setuptools.__version__).base_version
+    if setuptools_version < '43.0.0':
+        raise RuntimeError(
+            "To properly install NNCF, please install setuptools>=43.0.0, "
+            "while current setuptools version is {curr}".format(
+            curr=setuptools.__version__
+        ))
+
 
 def read(*parts):
     with codecs.open(os.path.join(here, *parts), 'r') as fp: