chore: import upstream snapshot with attribution

docs/workflow/task/template.md

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+# Template Task
+
+![task](../../images/task.png#only-light)
+![task](../../images/task-dark.png#only-dark)
+
+The Template Task generates text from a template and task inputs. Templates can be used to prepare data for a number of tasks including generating large
+language model (LLM) prompts.
+
+## Example
+
+The following shows a simple example using this task as part of a workflow.
+
+```python
+from txtai.workflow import TemplateTask, Workflow
+
+workflow = Workflow([TemplateTask(template="This is a {text} task")])
+workflow([{"text": "template"}])
+```
+
+## Configuration-driven example
+
+This task can also be created with workflow configuration.
+
+```yaml
+workflow:
+  tasks:
+    - task: template
+      template: This is a {text} task
+```
+
+## Methods
+
+Python documentation for the task.
+
+### ::: txtai.workflow.TemplateTask.__init__