Updated Windows installation doc, refined logging

docs/windows_installation.md

@@ -5,6 +5,20 @@ We **strongly** recommend that Windows users use [Docker](docker_quickstart.md)
 If that is not possible, try using the Windows Linux subsystem (WSL) - for which the Ubuntu instructions should work.
 Otherwise, please follow the instructions below.
 
+## Install freqtrade automatically
+
+### Using Invoke-WebRequest
+
+```powershell
+Invoke-WebRequest -Uri "https://raw.githubusercontent.com/freqtrade/freqtrade/stable/setup.ps1" -UseBasicParsing | Invoke-Expression
+```
+
+### Or using curl
+
+```powershell
+curl -sSL "https://raw.githubusercontent.com/freqtrade/freqtrade/stable/setup.ps1" | powershell -c -
+```
+
 ## Install freqtrade manually
 
 !!! Note "64bit Python version"

setup.ps1

@@ -119,12 +119,12 @@ function Test-PythonExecutable {
 
   $DeactivateVenv = Join-Path $VenvDir "Scripts\Deactivate.bat"
   if (Test-Path $DeactivateVenv) {
-    Write-Host "Deactivating virtual environment..."
+    Write-Host "Deactivating virtual environment..." 2>&1 | Out-File $LogFilePath -Append
     & $DeactivateVenv
-    Write-Host "Virtual environment deactivated."
+    Write-Host "Virtual environment deactivated." 2>&1 | Out-File $LogFilePath -Append
   }
   else {
-    Write-Host "Deactivation script not found: $DeactivateVenv"
+    Write-Host "Deactivation script not found: $DeactivateVenv" 2>&1 | Out-File $LogFilePath -Append
   }
 
   $PythonCmd = Get-Command $PythonExecutable -ErrorAction SilentlyContinue
@@ -165,7 +165,7 @@ function Main {
   # Exit on lower versions than Python 3.9 or when Python executable not found
   $PythonExecutable = Find-PythonExecutable
   if ($null -eq $PythonExecutable) {
-    Write-Host "Error: No suitable Python executable found. Please ensure that Python 3.9 or higher is installed and available in the system PATH."
+    Write-Log "No suitable Python executable found. Please ensure that Python 3.9 or higher is installed and available in the system PATH." -Level 'ERROR'
     Exit 1
   }
 
@@ -190,7 +190,7 @@ function Main {
   & $ActivateVenv 2>&1 | Out-File $LogFilePath -Append
   # Check if virtual environment is activated
   if ($env:VIRTUAL_ENV) {
-    Write-Host "Virtual environment is activated at: $($env:VIRTUAL_ENV)"
+    Write-Log "Virtual environment is activated at: $($env:VIRTUAL_ENV)"
   }
   else {
     Write-Log "Failed to activate virtual environment." -Level 'ERROR'