Add a simply Windows dependency install script

setup/win/install_deps.bat

@@ -0,0 +1,45 @@
+@echo off
+
+net session >nul 2>&1
+
+if %errorLevel% NEQ 0 (
+    echo Need Administrator permission to install dependencies
+    pause
+    exit
+)
+
+where choco >nul 2>&1
+
+if %errorLevel% == 0 (
+    echo Found Chocolatey
+    choco --version
+) else (
+    echo Install Chocolatey...
+    @"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))" && SET "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"
+)
+
+if exist "C:\Program Files (x86)\Inno Setup 5\ISCC.exe" (
+    echo Found Inno Setup v5
+) else (
+    choco install innosetup --version=5.6.1 -y
+)
+
+if exist "C:\Program Files (x86)\Inno Download Plugin\idp.iss" (
+    echo Found Inno Download Plugin
+) else (
+    choco install inno-download-plugin -y
+)
+
+if exist "C:\lazarus\lazbuild.exe" (
+    echo Found Lazarus
+) else (
+    choco install lazarus --x86 -y
+)
+
+if exist "C:\Program Files\Git\git-cmd.exe" (
+    echo Found git
+) else (
+    choco install git -y
+)
+
+pause