dev-python/ptpython: new package, add 3.0.29

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>

dev-python/ptpython/metadata.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+        <maintainer type="person">
+                <email>wuzhenyu@ustc.edu</email>
+                <name>Wu, Zhenyu</name>
+        </maintainer>
+        <upstream>
+                <remote-id type="pypi">ptpython</remote-id>
+                <remote-id type="github">prompt-toolkit/ptpython</remote-id>
+        </upstream>
+</pkgmetadata>