feat(all): Task store

implements:
https://github.com/meilisearch/specifications/blob/develop/text/0060-refashion-updates-apis.md

linked PR:

- #1889
- #1891
- #1892
- #1902
- #1906
- #1911
- #1914
- #1915
- #1916
- #1918
- #1924
- #1925
- #1926
- #1930
- #1936
- #1937
- #1942
- #1944
- #1945
- #1946
- #1947
- #1950
- #1951
- #1957
- #1959
- #1960
- #1961
- #1962
- #1964

- https://github.com/meilisearch/milli/pull/414
- https://github.com/meilisearch/milli/pull/409
- https://github.com/meilisearch/milli/pull/406
- https://github.com/meilisearch/milli/pull/418

- close #1687
- close #1786
- close #1940
- close #1948
- close #1949
- close #1932
- close #1956

meilisearch-http/tests/index/create_index.rs

@@ -7,14 +7,15 @@ async fn create_index_no_primary_key() {
     let index = server.index("test");
     let (response, code) = index.create(None).await;
 
-    assert_eq!(code, 201);
-    assert_eq!(response["uid"], "test");
-    assert_eq!(response["name"], "test");
-    assert!(response.get("createdAt").is_some());
-    assert!(response.get("updatedAt").is_some());
-    assert_eq!(response["createdAt"], response["updatedAt"]);
-    assert_eq!(response["primaryKey"], Value::Null);
-    assert_eq!(response.as_object().unwrap().len(), 5);
+    assert_eq!(code, 202);
+
+    assert_eq!(response["status"], "enqueued");
+
+    let response = index.wait_task(0).await;
+
+    assert_eq!(response["status"], "succeeded");
+    assert_eq!(response["type"], "indexCreation");
+    assert_eq!(response["details"]["primaryKey"], Value::Null);
 }
 
 #[actix_rt::test]
@@ -23,14 +24,15 @@ async fn create_index_with_primary_key() {
     let index = server.index("test");
     let (response, code) = index.create(Some("primary")).await;
 
-    assert_eq!(code, 201);
-    assert_eq!(response["uid"], "test");
-    assert_eq!(response["name"], "test");
-    assert!(response.get("createdAt").is_some());
-    assert!(response.get("updatedAt").is_some());
-    //assert_eq!(response["createdAt"], response["updatedAt"]);
-    assert_eq!(response["primaryKey"], "primary");
-    assert_eq!(response.as_object().unwrap().len(), 5);
+    assert_eq!(code, 202);
+
+    assert_eq!(response["status"], "enqueued");
+
+    let response = index.wait_task(0).await;
+
+    assert_eq!(response["status"], "succeeded");
+    assert_eq!(response["type"], "indexCreation");
+    assert_eq!(response["details"]["primaryKey"], "primary");
 }
 
 #[actix_rt::test]
@@ -42,7 +44,7 @@ async fn create_index_with_invalid_primary_key() {
     let (_response, code) = index.add_documents(document, Some("title")).await;
     assert_eq!(code, 202);
 
-    index.wait_update_id(0).await;
+    index.wait_task(0).await;
 
     let (response, code) = index.get().await;
     assert_eq!(code, 200);
@@ -61,6 +63,10 @@ async fn test_create_multiple_indexes() {
     index2.create(None).await;
     index3.create(None).await;
 
+    index1.wait_task(0).await;
+    index1.wait_task(1).await;
+    index1.wait_task(2).await;
+
     assert_eq!(index1.get().await.1, 200);
     assert_eq!(index2.get().await.1, 200);
     assert_eq!(index3.get().await.1, 200);
@@ -73,9 +79,11 @@ async fn error_create_existing_index() {
     let index = server.index("test");
     let (_, code) = index.create(Some("primary")).await;
 
-    assert_eq!(code, 201);
+    assert_eq!(code, 202);
 
-    let (response, code) = index.create(Some("primary")).await;
+    index.create(Some("primary")).await;
+
+    let response = index.wait_task(1).await;
 
     let expected_response = json!({
         "message": "Index `test` already exists.",
@@ -84,8 +92,7 @@ async fn error_create_existing_index() {
         "link":"https://docs.meilisearch.com/errors#index_already_exists"
     });
 
-    assert_eq!(response, expected_response);
-    assert_eq!(code, 409);
+    assert_eq!(response["error"], expected_response);
 }
 
 #[actix_rt::test]