[73_31] xmake: fix Info.plist codesign

## What
+ Postpone codesign to `research_packager` xmake target to fix
Info.plist codesign
+ Improve Info.plist.in

## Why
Info.plist is not codesigned.

## How to test your changes?
```
xmake config -m release
xmake b research
xmake i research
xmake i research_packager

cp TeXmacs/tests/tm/73_31.tm $HOME/Documents
cp TeXmacs/tests/PDF/73_31.pdf $HOME/Documents
```
Manually install the generated dmg, and test the dmg on
`$HOME/Documents/71_31.tm`

TeXmacs/tests/tm/73_31.tm

@@ -0,0 +1,13 @@
+<TeXmacs|2.1.2>
+
+<style|generic>
+
+<\body>
+  <image|73_31.pdf|0.5par|||>
+</body>
+
+<\initial>
+  <\collection>
+    <associate|page-medium|paper>
+  </collection>
+</initial>

packages/macos/Info.plist.in

@@ -3,7 +3,7 @@
 <plist version="1.0">
   <dict>
     <key>CFBundleDevelopmentRegion</key>
-    <string>English</string>
+    <string>en</string>
     <key>CFBundleDocumentTypes</key>
     <array>
       <dict>
@@ -24,28 +24,24 @@
         <true/>
       </dict>
     </array>
+    <key>CFBundleDisplayName</key>
+    <string>MoganResearch</string>
     <key>CFBundleExecutable</key>
     <string>MoganResearch</string>
+    <key>CFBundleName</key>
+    <string>MoganResearch</string>
     <key>CFBundleIconFile</key>
     <string>new-mogan</string>
     <key>CFBundleIdentifier</key>
     <string>app.mogan.research</string>
     <key>CFBundleInfoDictionaryVersion</key>
     <string>6.0</string>
-    <key>CFBundleName</key>
-    <string>TeXmacs</string>
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>
     <string>@XMACS_VERSION@</string>
     <key>CFBundleVersion</key>
     <string>@XMACS_VERSION@</string>
-    <key>SUFeedURL</key>
-    <string>@APPCAST@</string>
-    <key>SUEnableAutomaticChecks</key>
-    <false/>
-    <key>CFBundleSignature</key>
-    <string>TXMC</string>
     <key>NSMainNibFile</key>
     <string>MainMenu</string>
     <key>NSPrincipalClass</key>
@@ -59,6 +55,6 @@
     <key>NSRequiresAquaSystemAppearance</key>
     <string>true</string>
     <key>NSHumanReadableCopyright</key>
-    <string>Copyright © 1998-2023 Joris van der Hoeven and others</string>
+    <string>Copyright © 2022-2024 Mogan Developers</string>
   </dict>
 </plist>

xmake/research.lua

@@ -246,7 +246,6 @@ function add_target_research_on_others()
             os.rm(app_dir .. "Contents/Frameworks/QtQmlModels.framework")
             os.rm(app_dir .. "Contents/Frameworks/QtQml.framework")
             os.rm(app_dir .. "Contents/Frameworks/QtQuick.framework")
-            os.execv("codesign", {"--force", "--deep", "--sign", "-", app_dir})
         end
     end)
 
@@ -326,6 +325,7 @@ target("research_packager") do
     after_install(function (target, opt)
         local app_dir = target:installdir() .. "/../../"
         os.cp("$(buildir)/Info.plist", app_dir .. "/Contents")
+        os.execv("codesign", {"--force", "--deep", "--sign", "-", app_dir})
         os.execv("hdiutil create $(buildir)/" .. dmg_name .. " -fs HFS+ -srcfolder " .. app_dir)
     end)
 end