Automated snippet conversion by scripts

These changes are purely mechanical to differentiate them from manual
fixes/adjustments made in the next commit.
This results in broken code as some snippets contain errors.

Made in four steps:
1. Run ./migrate-snippet.py that converts `.md` files to code files
   and perhaps adds missing lines under `// @hide` comments.
2. Sort Java imports.
3. Remove old `.md` files.
4. Run ./generate.md to produce `*/generated/*.md` files.

qdrant-landing/content/documentation/headless/snippets/query-points/exclude-fields/generated/csharp.md

@@ -0,0 +1,16 @@
+```csharp
+using Qdrant.Client;
+using Qdrant.Client.Grpc;
+
+var client = new QdrantClient("localhost", 6334);
+
+await client.QueryAsync(
+	collectionName: "{collection_name}",
+	query: new float[] { 0.2f, 0.1f, 0.9f, 0.7f },
+	payloadSelector: new WithPayloadSelector
+	{
+		Exclude = new PayloadExcludeSelector { Fields = { new string[] { "city" } } }
+	},
+	limit: 3
+);
+```

qdrant-landing/content/documentation/headless/snippets/query-points/exclude-fields/generated/go.md

@@ -0,0 +1,18 @@
+```go
+import (
+	"context"
+
+	"github.com/qdrant/go-client/qdrant"
+)
+
+client, err := qdrant.NewClient(&qdrant.Config{
+	Host: "localhost",
+	Port: 6334,
+})
+
+client.Query(context.Background(), &qdrant.QueryPoints{
+	CollectionName: "{collection_name}",
+	Query:          qdrant.NewQuery(0.2, 0.1, 0.9, 0.7),
+	WithPayload:    qdrant.NewWithPayloadExclude("city"),
+})
+```

qdrant-landing/content/documentation/headless/snippets/query-points/exclude-fields/generated/java.md

@@ -0,0 +1,21 @@
+```java
+import static io.qdrant.client.QueryFactory.nearest;
+import static io.qdrant.client.WithPayloadSelectorFactory.exclude;
+
+import io.qdrant.client.QdrantClient;
+import io.qdrant.client.QdrantGrpcClient;
+import io.qdrant.client.grpc.Points.QueryPoints;
+import java.util.List;
+
+QdrantClient client =
+    new QdrantClient(QdrantGrpcClient.newBuilder("localhost", 6334, false).build());
+
+client.queryAsync(
+        QueryPoints.newBuilder()
+                .setCollectionName("{collection_name}")
+                .setQuery(nearest(0.2f, 0.1f, 0.9f, 0.7f))
+                .setWithPayload(exclude(List.of("city")))
+                .setLimit(3)
+                .build())
+        .get();
+```

qdrant-landing/content/documentation/headless/snippets/query-points/exclude-fields/generated/python.md

@@ -0,0 +1,13 @@
+```python
+from qdrant_client import QdrantClient, models
+
+client = QdrantClient(url="http://localhost:6333")
+
+client.query_points(
+    collection_name="{collection_name}",
+    query=[0.2, 0.1, 0.9, 0.7],
+    with_payload=models.PayloadSelectorExclude(
+        exclude=["city"],
+    ),
+)
+```

qdrant-landing/content/documentation/headless/snippets/query-points/exclude-fields/generated/rust.md

@@ -0,0 +1,16 @@
+```rust
+use qdrant_client::qdrant::{with_payload_selector::SelectorOptions, QueryPointsBuilder};
+use qdrant_client::Qdrant;
+
+let client = Qdrant::from_url("http://localhost:6334").build()?;
+
+client
+    .query(
+        QueryPointsBuilder::new("{collection_name}")
+            .query(vec![0.2, 0.1, 0.9, 0.7])
+            .limit(3)
+            .with_payload(SelectorOptions::Exclude(vec!["city".to_string()].into()))
+            .with_vectors(true),
+    )
+    .await?;
+```

qdrant-landing/content/documentation/headless/snippets/query-points/exclude-fields/generated/typescript.md

@@ -0,0 +1,12 @@
+```typescript
+import { QdrantClient } from "@qdrant/js-client-rest";
+
+const client = new QdrantClient({ host: "localhost", port: 6333 });
+
+client.query("{collection_name}", {
+  query: [0.2, 0.1, 0.9, 0.7],
+  with_payload: {
+    exclude: ["city"],
+  },
+});
+```