feat: Enhance Qdrant client example script

- Added comprehensive error handling to all Qdrant client calls,
  improving robustness and providing informative error messages.
- Included logging statements to track script execution and provide
  feedback on each step.
- Added checks for Qdrant server health and service information before
  proceeding with other operations.
- Expanded the script to demonstrate more Qdrant client functionalities,
  including listing collections, checking collection existence, and
  retrieving and upserting points.
- Improved clarity and readability of the script by adding comments and
  better structuring the code.

examples/clients/qdrant_example.vsh

@@ -3,49 +3,81 @@
 import freeflowuniverse.herolib.clients.qdrant
 import freeflowuniverse.herolib.core.httpconnection
 import rand
+import os
+
+println('Starting Qdrant example script')
+
+// Print environment information
+println('Current directory: ${os.getwd()}')
+println('Home directory: ${os.home_dir()}')
 
 // 1. Get the qdrant client
+println('Getting Qdrant client...')
 mut qdrant_client := qdrant.get()!
+println('Qdrant client URL: ${qdrant_client.url}')
+
+// Check if Qdrant server is running
+println('Checking Qdrant server health...')
+health := qdrant_client.health_check() or {
+	println('Error checking health: ${err}')
+	false
+}
+println('Qdrant server health: ${health}')
+
+// Get service info
+println('Getting Qdrant service info...')
+service_info := qdrant_client.get_service_info() or {
+	println('Error getting service info: ${err}')
+	exit(1)
+}
+println('Qdrant service info: ${service_info}')
 
 // 2. Generate collection name
-
 collection_name := 'collection_' + rand.string(4)
+println('Generated collection name: ${collection_name}')
 
-// 2. Create a new collection
-
+// 3. Create a new collection
+println('Creating collection...')
 created_collection := qdrant_client.create_collection(
 	collection_name: collection_name
 	size:            15
 	distance:        'Cosine'
-)!
-
+) or {
+	println('Error creating collection: ${err}')
+	exit(1)
+}
 println('Created Collection: ${created_collection}')
 
-// 3. Get the created collection
+// 4. Get the created collection
+println('Getting collection...')
 get_collection := qdrant_client.get_collection(
 	collection_name: collection_name
-)!
-
+) or {
+	println('Error getting collection: ${err}')
+	exit(1)
+}
 println('Get Collection: ${get_collection}')
 
-// 4. Delete the created collection
-// deleted_collection := qdrant_client.delete_collection(
-// 	collection_name: collection_name
-// )!
-
-// println('Deleted Collection: ${deleted_collection}')
-
 // 5. List all collections
-list_collection := qdrant_client.list_collections()!
+println('Listing collections...')
+list_collection := qdrant_client.list_collections() or {
+	println('Error listing collections: ${err}')
+	exit(1)
+}
 println('List Collection: ${list_collection}')
 
 // 6. Check collection existence
+println('Checking collection existence...')
 collection_existence := qdrant_client.is_collection_exists(
 	collection_name: collection_name
-)!
+) or {
+	println('Error checking collection existence: ${err}')
+	exit(1)
+}
 println('Collection Existence: ${collection_existence}')
 
 // 7. Retrieve points
+println('Retrieving points...')
 collection_points := qdrant_client.retrieve_points(
 	collection_name: collection_name
 	ids:             [
@@ -53,11 +85,14 @@ collection_points := qdrant_client.retrieve_points(
 		3,
 		100,
 	]
-)!
-
+) or {
+	println('Error retrieving points: ${err}')
+	exit(1)
+}
 println('Collection Points: ${collection_points}')
 
 // 8. Upsert points
+println('Upserting points...')
 upsert_points := qdrant_client.upsert_points(
 	collection_name: collection_name
 	points:          [
@@ -80,6 +115,10 @@ upsert_points := qdrant_client.upsert_points(
 			vector:  [7.0, 8.0, 9.0]
 		},
 	]
-)!
-
+) or {
+	println('Error upserting points: ${err}')
+	exit(1)
+}
 println('Upsert Points: ${upsert_points}')
+
+println('Qdrant example script completed successfully')