docs: Go, C#, Java snippets

Signed-off-by: Anush008 <anushshetty90@gmail.com>

qdrant-landing/content/documentation/headless/snippets/create-payload-index/asciifolding-full-text/csharp.md

@@ -0,0 +1,21 @@
+```csharp
+using Qdrant.Client;
+using Qdrant.Client.Grpc;
+
+var client = new QdrantClient("localhost", 6334);
+
+await client.CreatePayloadIndexAsync(
+    collectionName: "{collection_name}",
+    fieldName: "name_of_the_field_to_index",
+    schemaType: PayloadSchemaType.Text,
+    indexParams: new PayloadIndexParams
+    {
+        TextIndexParams = new TextIndexParams
+        {
+            Tokenizer = TokenizerType.Word,
+            Lowercase = true,
+			AsciiFolding = true,
+        }
+    }
+);
+```

qdrant-landing/content/documentation/headless/snippets/create-payload-index/asciifolding-full-text/go.md

@@ -0,0 +1,24 @@
+```go
+import (
+    "context"
+
+    "github.com/qdrant/go-client/qdrant"
+)
+
+client, err := qdrant.NewClient(&qdrant.Config{
+    Host: "localhost",
+    Port: 6334,
+})
+
+client.CreateFieldIndex(context.Background(), &qdrant.CreateFieldIndexCollection{
+	CollectionName: "{collection_name}",
+	FieldName:      "name_of_the_field_to_index",
+	FieldType:      qdrant.FieldType_FieldTypeText.Enum(),
+	FieldIndexParams: qdrant.NewPayloadIndexParamsText(
+		&qdrant.TextIndexParams{
+			Tokenizer:    qdrant.TokenizerType_Word,
+			Lowercase:    qdrant.PtrOf(true),
+			AsciiFolding: qdrant.PtrOf(true),
+		}),
+})
+```

qdrant-landing/content/documentation/headless/snippets/create-payload-index/asciifolding-full-text/java.md

@@ -0,0 +1,29 @@
+```java
+import io.qdrant.client.QdrantClient;
+import io.qdrant.client.QdrantGrpcClient;
+import io.qdrant.client.grpc.Collections.PayloadIndexParams;
+import io.qdrant.client.grpc.Collections.PayloadSchemaType;
+import io.qdrant.client.grpc.Collections.TextIndexParams;
+import io.qdrant.client.grpc.Collections.TokenizerType;
+
+QdrantClient client =
+    new QdrantClient(QdrantGrpcClient.newBuilder("localhost", 6334, false).build());
+
+client
+    .createPayloadIndexAsync(
+        "{collection_name}",
+        "name_of_the_field_to_index",
+        PayloadSchemaType.Text,
+        PayloadIndexParams.newBuilder()
+            .setTextIndexParams(
+                TextIndexParams.newBuilder()
+                    .setTokenizer(TokenizerType.Word)
+                    .setLowercase(true)
+                    .setAsciiFolding(true)
+                    .build())
+            .build(),
+        null,
+        null,
+        null)
+    .get();
+```

qdrant-landing/content/documentation/headless/snippets/create-payload-index/lowercase-full-text/csharp.md

@@ -0,0 +1,20 @@
+```csharp
+using Qdrant.Client;
+using Qdrant.Client.Grpc;
+
+var client = new QdrantClient("localhost", 6334);
+
+await client.CreatePayloadIndexAsync(
+    collectionName: "{collection_name}",
+    fieldName: "name_of_the_field_to_index",
+    schemaType: PayloadSchemaType.Text,
+    indexParams: new PayloadIndexParams
+    {
+        TextIndexParams = new TextIndexParams
+        {
+            Tokenizer = TokenizerType.Word,
+            Lowercase = true,
+        }
+    }
+);
+```

qdrant-landing/content/documentation/headless/snippets/create-payload-index/lowercase-full-text/go.md

@@ -0,0 +1,23 @@
+```go
+import (
+    "context"
+
+    "github.com/qdrant/go-client/qdrant"
+)
+
+client, err := qdrant.NewClient(&qdrant.Config{
+    Host: "localhost",
+    Port: 6334,
+})
+
+client.CreateFieldIndex(context.Background(), &qdrant.CreateFieldIndexCollection{
+    CollectionName: "{collection_name}",
+    FieldName:      "name_of_the_field_to_index",
+    FieldType:      qdrant.FieldType_FieldTypeText.Enum(),
+    FieldIndexParams: qdrant.NewPayloadIndexParamsText(
+        &qdrant.TextIndexParams{
+            Tokenizer:   qdrant.TokenizerType_Word,
+            Lowercase:   qdrant.PtrOf(true),
+        }),
+})
+```

qdrant-landing/content/documentation/headless/snippets/create-payload-index/lowercase-full-text/java.md

@@ -0,0 +1,28 @@
+```java
+import io.qdrant.client.QdrantClient;
+import io.qdrant.client.QdrantGrpcClient;
+import io.qdrant.client.grpc.Collections.PayloadIndexParams;
+import io.qdrant.client.grpc.Collections.PayloadSchemaType;
+import io.qdrant.client.grpc.Collections.TextIndexParams;
+import io.qdrant.client.grpc.Collections.TokenizerType;
+
+QdrantClient client =
+    new QdrantClient(QdrantGrpcClient.newBuilder("localhost", 6334, false).build());
+
+client
+    .createPayloadIndexAsync(
+        "{collection_name}",
+        "name_of_the_field_to_index",
+        PayloadSchemaType.Text,
+        PayloadIndexParams.newBuilder()
+            .setTextIndexParams(
+                TextIndexParams.newBuilder()
+                    .setTokenizer(TokenizerType.Word)
+                    .setLowercase(true)
+                    .build())
+            .build(),
+        null,
+        null,
+        null)
+    .get();
+```