Simplify development environment setup (#1588)

dev/setup_secrets.ps1

@@ -0,0 +1,21 @@
+#!/usr/bin/env pwsh
+# Helper script for applying the same user secrets to each project
+param (
+    [bool]$clear,
+    [Parameter(ValueFromRemainingArguments = $true, Position=1)]
+    $cmdArgs
+)
+
+if (!(Test-Path "secrets.json")) {
+    Write-Warning "No secrets.json file found, please copy and modify the provided example";
+    exit;
+}
+
+$projects = "Admin", "Api", "Billing", "Events", "EventsProcessor", "Icons", "Identity", "Notifications";
+
+foreach ($projects in $projects) {
+    if ($clear -eq $true) {
+        dotnet user-secrets clear -p "../src/$projects"
+    }
+    Get-Content secrets.json | & dotnet user-secrets set -p "../src/$projects"
+}