Allow setting api keys through env variables (#7)

* Allow setting api keys through env variables

* Use kong functionality

Author: bashofmann

cmd/migrate_from_qdrant.go

@@ -25,10 +25,10 @@ const HTTPS = "https"
 type MigrateFromQdrantCmd struct {
 	SourceUrl              string `help:"Source GRPC URL, e.g. https://your-qdrant-hostname:6334" required:"true"`
 	SourceCollection       string `help:"Source collection" required:"true"`
-	SourceAPIKey           string `help:"Source API key"`
+	SourceAPIKey           string `help:"Source API key" env:"SOURCE_API_KEY"`
 	TargetUrl              string `help:"Target GRPC URL, e.g. https://your-qdrant-hostname:6334" required:"true"`
 	TargetCollection       string `help:"Target collection" required:"true"`
-	TargetAPIKey           string `help:"Target API key"`
+	TargetAPIKey           string `help:"Target API key" env:"TARGET_API_KEY"`
 	BatchSize              uint32 `short:"b" help:"Batch size" default:"50"`
 	CreateTargetCollection bool   `short:"c" help:"Create the target collection if it does not exist" default:"false"`
 	MigrationMarker        string `short:"m" help:"Migration marker to resume the migration" optional:"true"`