feat: rename shuffle to shuffle_rows (#125)

### Summary of Changes

To be consistent with the other methods of `Table`, I've rename
`shuffle` to `shuffle_rows`. This makes it obvious that the columns are
not changed.

src/safeds/data/tabular/containers/_table.py

@@ -769,7 +769,7 @@ def replace_column(self, old_column_name: str, new_column: Column) -> Table:
         result[new_column.name] = new_column._data
         return Table(result)
 
-    def shuffle(self) -> Table:
+    def shuffle_rows(self) -> Table:
         """
         Shuffle the table randomly.
 

tests/safeds/data/tabular/containers/_table/test_shuffle.py → tests/safeds/data/tabular/containers/_table/test_shuffle_rows.py

@@ -2,7 +2,7 @@
 from safeds.data.tabular.containers import Table
 
 
-def test_shuffle_valid() -> None:
+def test_shuffle_rows_valid() -> None:
     table = Table(pd.DataFrame(data={"col1": [1], "col2": [1]}))
-    result_table = table.shuffle()
+    result_table = table.shuffle_rows()
     assert table == result_table