feat: add support for optional metadata in task creation and updates

Author: kmkkiii

README.md

@@ -99,7 +99,7 @@ task_id = client.create_image_task(
 )
 ```
 
-Create a new task with pre-defined annotations. (Class should be configured on your project in advance)
+Create a new task with pre-defined annotations and metadatas. (Class and metadata should be configured on your project in advance)
 
 ```python
 task_id = client.create_image_task(
@@ -122,7 +122,13 @@ task_id = client.create_image_task(
             200,  # bottom-right x
             200   # bottom-right y
         ]
-    }]
+    }],
+    metadatas=[  # (optional) pre-defined metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```
 
@@ -265,6 +271,12 @@ task_id = client.update_image_task(
         "startIndex": 2,
         "endIndex": 0
       }
+    ],
+    metadatas=[  # (optional) metadata key-value pairs (metadata should be configured on your project in advance)
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
     ]
 )
 ```
@@ -863,7 +875,7 @@ task_id = client.create_video_task(
 )
 ```
 
-Create a new task with pre-defined annotations. (Class should be configured on your project in advance)
+Create a new task with pre-defined annotations and metadatas. (Class and metadata should be configured on your project in advance)
 
 ```python
 task_id = client.create_video_task(
@@ -905,7 +917,13 @@ task_id = client.create_video_task(
                 "autogenerated": False
             }
         }
-    }]
+    }],
+    metadatas=[  # (optional) pre-defined metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```
 
@@ -980,7 +998,13 @@ task_id = client.update_video_task(
                 "autogenerated": False
             }
         }
-    }]
+    }],
+    metadatas=[  # (optional) metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```
 
@@ -1165,7 +1189,7 @@ task_id = client.create_text_task(
 )
 ```
 
-Create a new task with pre-defined annotations. (Class should be configured on your project in advance)
+Create a new task with pre-defined annotations and metadatas. (Class and metadata should be configured on your project in advance)
 
 ```python
 task_id = client.create_text_task(
@@ -1179,7 +1203,13 @@ task_id = client.create_text_task(
         "start": 0,
         "end": 10,
         "text": "1234567890"
-    }]
+    }],
+    metadatas=[  # (optional) pre-defined metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```
 
@@ -1226,7 +1256,13 @@ task_id = client.update_text_task(
         "start": 0,
         "end": 10,
         "text": "0123456789"
-    }]
+    }],
+    metadatas=[  # (optional) metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```
 
@@ -1353,7 +1389,7 @@ task_id = client.create_audio_task(
 )
 ```
 
-Create a new task with pre-defined annotations. (Class should be configured on your project in advance)
+Create a new task with pre-defined annotations and metadatas. (Class and metadata should be configured on your project in advance)
 
 ```python
 task_id = client.create_audio_task(
@@ -1366,7 +1402,13 @@ task_id = client.create_audio_task(
         "value": "person",
         "start": 0.4,
         "end": 0.5
-    }]
+    }],
+    metadatas=[  # (optional) pre-defined metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```
 
@@ -1412,7 +1454,13 @@ task_id = client.update_audio_task(
         "value": "bird",
         "start": 0.4,
         "end": 0.5
-    }]
+    }],
+    metadatas=[  # (optional) metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```
 
@@ -1589,7 +1637,7 @@ task_id = client.create_pcd_task(
 )
 ```
 
-Create a new task with pre-defined annotations. (Class should be configured on your project in advance)
+Create a new task with pre-defined annotations and metadatas. (Class and metadata should be configured on your project in advance)
 
 Annotation Type: cuboid
 
@@ -1616,6 +1664,12 @@ task_id = client.create_pcd_task(
             ],
         }
     ],
+    metadatas=[  # (optional) pre-defined metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```
 
@@ -1691,6 +1745,12 @@ task_id = client.update_pcd_task(
             ],
         }
     ],
+    metadatas=[  # (optional) metadata key-value pairs
+        {
+            "key": "metadata_key",
+            "value": "metadata_value"
+        }
+    ]
 )
 ```