Add git download & install to install scripts

scripts/installer.nsh

@@ -1,5 +1,10 @@
 !include 'LogicLib.nsh'
 
+# electron-build documentation: https://www.electron.build/nsis.html#custom-nsis-script
+# NSIS reference: https://nsis.sourceforge.io/Docs/
+#
+# Hooks: customHeader, preInit, customInit, customUnInit, customInstall, customUnInstall, customRemoveFiles, customInstallMode, customWelcomePage, customUnWelcomePage
+
 ; The following is used to add the "/SD" flag to MessageBox so that the
 ; machine can restart if the uninstaller fails.
 !macro customUnInstallCheckCommon
@@ -79,4 +84,17 @@
     FileClose $0
     Delete "$APPDATA\ComfyUI\extra_models_config.yaml"
   ${endIf}
-!macroend
+!macroend
+
+# Checks for git and installs it if not present.
+Section "Git for Windows"
+    IfErrors gitClearErrors
+  gitClearErrors:
+    ExecWait "where.exe git"
+    IfErrors installGit gitInstalled
+  installGit:
+    SetOutPath "$INSTDIR"
+    ExecWait "$INSTDIR\Git-2.47.1-64-bit.exe /verysilent /suppressmsgboxes /log /norestart /restartapplications"
+    Delete "$INSTDIR\Git-2.47.1-64-bit.exe"
+  gitInstalled:
+SectionEnd

scripts/todesktop/beforeInstall.js

@@ -19,5 +19,10 @@ module.exports = async ({ pkgJsonPath, pkgJson, appDir, hookName }) => {
         // Change stdio to get back the logs if there are issues.
         const result1 = spawnSync('curl' ,['-s', 'https://www.python.org/ftp/python/3.12.7/python-3.12.7-amd64.exe'],{shell:true,stdio: 'ignore'}).toString();
         const result2 = spawnSync('python-3.12.7-amd64.exe', ['/quiet', 'InstallAllUsers=1','PrependPath=1', 'Include_test=0'],{shell:true,stdio: 'ignore'}).toString();
+
+        // Download git
+        // TODO: Move to the installer, if current dist infra permits it
+        const res = spawnSync('where.exe', 'git')
+        if (res.status !== 0) spawnSync('curl', ['-s', 'https://github.com/git-for-windows/git/releases/download/v2.47.1.windows.1/Git-2.47.1-64-bit.exe'], { shell:true, stdio: 'ignore' }).toString();
     }
-};
+};