feat: Remove unnecessary delete_collection call in example

- Removed the `delete_collection` call from the Qdrant example
  to avoid unnecessary collection deletion. This simplifies the
  example and prevents potential issues if the collection doesn't
  exist.
- Updated `RetrievePointsParams` struct to use optional parameters
  for `shard_key`, `with_payload`, and `with_vectors`. This
  improves flexibility and reduces the required parameters.  The
  change simplifies the request structure.

examples/clients/qdrant_example.vsh

@@ -29,11 +29,11 @@ get_collection := qdrant_client.get_collection(
 println('Get Collection: ${get_collection}')
 
 // 4. Delete the created collection
-deleted_collection := qdrant_client.delete_collection(
-	collection_name: collection_name
-)!
+// deleted_collection := qdrant_client.delete_collection(
+// 	collection_name: collection_name
+// )!
 
-println('Deleted Collection: ${deleted_collection}')
+// println('Deleted Collection: ${deleted_collection}')
 
 // 5. List all collections
 list_collection := qdrant_client.list_collections()!

lib/clients/qdrant/points.v

@@ -3,24 +3,15 @@ module qdrant
 import freeflowuniverse.herolib.core.httpconnection
 import json
 
-// Retrieves all details from multiple points.
-pub struct RetrievePointsRequest {
-pub mut:
-	ids          []int @[json: 'ids'; required] // Look for points with ids
-	shard_key    string // Specify in which shards to look for the points, if not specified - look in all shards
-	with_payload bool   // Select which payload to return with the response. Default is true.
-	with_vectors bool   // Options for specifying which vectors to include into response. Default is false.
-}
-
 // Retrieves all details from multiple points.
 @[params]
 pub struct RetrievePointsParams {
 pub mut:
 	ids             []int  @[json: 'ids'; required]             // Look for points with ids
 	collection_name string @[json: 'collection_name'; required] // Name of the collection
-	shard_key       string // Specify in which shards to look for the points, if not specified - look in all shards
-	with_payload    bool   // Select which payload to return with the response. Default is true.
-	with_vectors    bool   // Options for specifying which vectors to include into response. Default is false.
+	shard_key       ?string // Specify in which shards to look for the points, if not specified - look in all shards
+	with_payload    ?bool   // Select which payload to return with the response. Default is true.
+	with_vectors    ?bool   // Options for specifying which vectors to include into response. Default is false.
 }
 
 pub struct RetrievePointsResponse {
@@ -38,12 +29,7 @@ pub fn (mut self QDrantClient) retrieve_points(params RetrievePointsParams) !QDr
 	req := httpconnection.Request{
 		method: .post
 		prefix: '/collections/${params.collection_name}/points'
-		data:   json.encode(RetrievePointsRequest{
-			ids:          params.ids
-			shard_key:    params.shard_key
-			with_payload: params.with_payload
-			with_vectors: params.with_vectors
-		})
+		data:   json.encode(params)
 	}
 
 	mut response := http_conn.send(req)!