feat: implement update operation (#1390)

# Description
Users can now update data that matches a predicate. 

This operation should be encouraged over the replace write operation
since update determines which values require rewriting based on the
supplied predicate.

# Related Issue(s)
- closes #1126

---------

Co-authored-by: Will Jones <willjones127@gmail.com>
Co-authored-by: Robert Pack <42610831+roeap@users.noreply.github.com>

rust/src/action/mod.rs

@@ -594,6 +594,11 @@ pub enum DeltaOperation {
         /// The condition the to be deleted data must match
         predicate: Option<String>,
     },
+    /// Update data matching predicate from delta table
+    Update {
+        /// The update predicate
+        predicate: Option<String>,
+    },
 
     /// Represents a Delta `StreamingUpdate` operation.
     #[serde(rename_all = "camelCase")]
@@ -632,6 +637,7 @@ impl DeltaOperation {
             DeltaOperation::Create { .. } => "CREATE TABLE",
             DeltaOperation::Write { .. } => "WRITE",
             DeltaOperation::Delete { .. } => "DELETE",
+            DeltaOperation::Update { .. } => "UPDATE",
             DeltaOperation::StreamingUpdate { .. } => "STREAMING UPDATE",
             DeltaOperation::Optimize { .. } => "OPTIMIZE",
             DeltaOperation::FileSystemCheck { .. } => "FSCK",
@@ -675,7 +681,8 @@ impl DeltaOperation {
             | Self::FileSystemCheck {}
             | Self::StreamingUpdate { .. }
             | Self::Write { .. }
-            | Self::Delete { .. } => true,
+            | Self::Delete { .. }
+            | Self::Update { .. } => true,
         }
     }
 
@@ -695,6 +702,7 @@ impl DeltaOperation {
             // TODO add more operations
             Self::Write { predicate, .. } => predicate.clone(),
             Self::Delete { predicate, .. } => predicate.clone(),
+            Self::Update { predicate, .. } => predicate.clone(),
             _ => None,
         }
     }