Implemented function to update an item

Cargo.lock

@@ -755,6 +755,12 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "either"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"
+
 [[package]]
 name = "embedded-hal"
 version = "0.2.7"
@@ -1361,6 +1367,15 @@ dependencies = [
  "waker-fn",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.3"
@@ -1554,6 +1569,7 @@ name = "mize"
 version = "0.1.0"
 dependencies = [
  "futures-util",
+ "itertools",
  "surrealdb",
  "tokio",
  "tokio-stream",