Add ability to export/import settings configuration (#522)

Scripts/FileIO/SaveToFile.ps1

@@ -0,0 +1,19 @@
+# Saves configuration JSON to a file.
+# Returns $true on success, $false on failure.
+function SaveToFile {
+    param (
+        [Parameter(Mandatory=$true)]
+        [hashtable]$Config,
+
+        [Parameter(Mandatory=$true)]
+        [string]$FilePath
+    )
+
+    try {
+        $Config | ConvertTo-Json -Depth 10 | Set-Content -Path $FilePath -Encoding UTF8
+        return $true
+    }
+    catch {
+        return $false
+    }
+}