python3-{pyyaml,cython,pyparsing}: move from meta-python to meta-oe

This specific statement in ostree recipe breaks the YP compatible
status (yocto-check-layer):

RDEPENDS_${PN}-ptest += " \
    ...
    ${@bb.utils.contains('BBFILE_COLLECTIONS', 'meta-python',    'python3-pyyaml', '', d)} \
    ...
"

Recently python3-pyyaml was moved to OE-core (0a8600f9cec0), and the
ostree recipe was fixed with:
b9ede0cb18 (python3-pyyaml: Do not check for meta-python)

In dunfell, moving python3-pyyaml to OE-core is not a great idea, but
moving it from meta-python to meta-oe allows us to fix ostree YP
compatible issue. Since meta-python depends on meta-oe, it should not
be a change with any visible effect.

python3-cython and python3-pyparsing are collateral damages since they are
dependency for python3-pyyaml, so needed to be moved too.

Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-devtools/python/python3-cython_0.29.14.bb

@@ -0,0 +1,18 @@
+inherit setuptools3
+require python-cython.inc
+
+RDEPENDS_${PN} += "\
+    python3-setuptools \
+"
+
+# running build_ext a second time during install fails, because Python
+# would then attempt to import cythonized modules built for the target
+# architecture.
+DISTUTILS_INSTALL_ARGS += "--skip-build"
+
+do_install_append() {
+    # rename scripts that would conflict with the Python 2 build of Cython
+    mv ${D}${bindir}/cython ${D}${bindir}/cython3
+    mv ${D}${bindir}/cythonize ${D}${bindir}/cythonize3
+    mv ${D}${bindir}/cygdb ${D}${bindir}/cygdb3
+}