Add meta for scipy app

applications/scipy/entrypoint.sh

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+{{ python-executable }} -m IPython "$@"

applications/scipy/requirements.txt

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+ipython
+matplotlib
+numpy
+pandas
+scipy
+sympy

applications/scipy/scipy.appdata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+    <id>scipy</id>
+    <metadata_license>Python-2.0</metadata_license>
+    <project_license>Python-2.0</project_license>
+    <name>Scipy</name>
+    <summary>A Python {{ python-fullversion }} runtime with {{ requirements }}
+    </summary>
+    <description>
+        <p>  A relocated Python {{ python-fullversion }} installation containing
+             the scipy packages suite ({{ requirements }}) and running from an
+             AppImage.
+        </p>
+    </description>
+    <launchable type="desktop-id">scipy.desktop</launchable>
+    <url type="homepage">https://scipy.org</url>
+    <provides>
+        <binary>python{{ python-version }}</binary>
+    </provides>
+</component>

applications/scipy/scipy.desktop

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+[Desktop Entry]
+Type=Application
+Name=scipy
+Exec=scipy
+Comment=A Python {{ python-fullversion }} runtime with {{ requirements }}
+Icon=scipy
+Categories=Science;
+Terminal=true