[+] add PowerShell installation script, resolves #8

Author: pashagolub

src/install.ps1

@@ -0,0 +1,25 @@
+Write-Host "--- Installing Python runtime ---" -ForegroundColor blue
+.\python-install.exe /quiet InstallAllUsers=1 PrependPath=1 Include_test=0 Include_launcher=0
+python.exe -m pip install --upgrade pip
+Write-Host "--- Python runtime installed ---`n" -ForegroundColor green
+
+# Update Path variable with installed Python
+$env:Path = [System.Environment]::GetEnvironmentVariable("Path","Machine") + ";" + [System.Environment]::GetEnvironmentVariable("Path","User")
+
+Write-Host "--- Installing Patroni packages ---" -ForegroundColor blue
+Set-Location 'patroni'
+pip3.exe install --no-index --find-links .patroni-packages -r requirements.txt
+pip3.exe install --no-index --find-links .patroni-packages psycopg2-binary
+Set-Location '..'
+Write-Host "--- Patroni packages installed ---`n" -ForegroundColor green
+
+Write-Host "--- Adding local user 'pes' for patroni service ---" -ForegroundColor blue
+$Password = -join ((65..90) + (97..122) | Get-Random -Count 8 | % {[char]$_})
+$SecurePassword = ConvertTo-SecureString $Password -AsPlainText -Force
+New-LocalUser "pes" -Password $SecurePassword -Description "Patroni service account"
+$ConfFile = 'patroni\patroni_service.xml'
+(Get-Content $ConfFile) -replace '12345', $Password | Out-File -encoding ASCII $ConfFile
+Write-Host "User password: $Password"
+Write-Host "--- Patroni user added ---`n" -ForegroundColor green
+
+Write-Host "--- Installation sucessfully finished ---" -ForegroundColor green

src/patroni_service.xml

@@ -8,7 +8,7 @@
   <log mode="roll"></log>
   <logpath>%BASE%\log</logpath>
   <serviceaccount>
-    <user>postgres</user>
+    <user>pes</user>
     <password>12345</password>
     <allowservicelogon>true</allowservicelogon>
   </serviceaccount>