Create installer script and assets (#303)

First commit of installer script and assets.

installer/installer.pot

@@ -0,0 +1,63 @@
+# 
+msgid ""
+msgstr ""
+"Project-Id-Version: Pixelorama 0.8\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2020-08-08 22:43\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Language: \n"
+
+#. SecInstall
+#: .\pixelorama.nsi:72
+msgid "Install ${APPNAME}"
+msgstr ""
+
+#. SecStartmenu
+#: .\pixelorama.nsi:73
+msgid "Create Start Menu shortcuts (optional)"
+msgstr ""
+
+#. SecDesktop
+#: .\pixelorama.nsi:74
+msgid "Create shortcut on Desktop (optional)"
+msgstr ""
+
+#. un.SecUninstall
+#: .\pixelorama.nsi:75
+msgid "Uninstall ${APPNAME} ${APPVERSION}"
+msgstr ""
+
+#. un.SecConfig
+#: .\pixelorama.nsi:76
+msgid "Remove configuration files (optional)"
+msgstr ""
+
+#. DESC_SecInstall
+#: .\pixelorama.nsi:178
+msgid "Installs ${APPNAME} ${APPVERSION}."
+msgstr ""
+
+#. DESC_SecStartmenu
+#: .\pixelorama.nsi:179
+msgid "Creates Start Menu shortcuts for ${APPNAME}."
+msgstr ""
+
+#. DESC_SecDesktop
+#: .\pixelorama.nsi:180
+msgid "Creates a Desktop shortcut for ${APPNAME}."
+msgstr ""
+
+#. DESC_un.SecUninstall
+#: .\pixelorama.nsi:181
+msgid "Uninstalls ${APPNAME} ${APPVERSION} and removes all shortcuts."
+msgstr ""
+
+#. DESC_un.SecConfig
+#: .\pixelorama.nsi:182
+msgid "Removes configuration files for ${APPNAME}."
+msgstr ""