docs: Added Rust client usage (#401)

* docs: Rust quick-start

* docs: rust auth.md

* docs: Rust /collections usage

* docs: filtering Rust

* docs: filtering Rust

* docs: Rust /indexing

* docs: Rust /payload

* docs: Rust /points

* docs: Rust /storage

* docs: Rust /snapshots

* docs: Rust /search

* New line after code blocks

* Add Rust imports

* Functions end with semicolon, values end without it

* Reformat using rustfmt

* Use TokenizerType ID from type

* Define score as Rust let if

* Add example of update collection call, implemented in Rust client 1.7.0

* chore: hide update_collection()

---------

Co-authored-by: timvisee <tim@visee.me>

qdrant-landing/content/documentation/cloud/authentication.md

@@ -55,4 +55,13 @@ var client = new QdrantClient(
   https: true,
   apiKey: "<paste-your-api-key-here>"
 );
-```
+```
+
+```rust
+use qdrant_client::client::QdrantClient;
+
+let client = QdrantClient::from_url("xyz-example.eu-central.aws.cloud.qdrant.io:6334")
+    .with_api_key("<paste-your-api-key-here>")
+    .build()
+    .unwrap();
+```