feat: create items for uk met office

datasets/met-office/dataset.yaml

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+id: met-office
+image: ${{ args.registry }}/pctasks-task-base:2025.4.8.2
+
+args:
+  - registry
+
+code:
+  src: ${{ local.path(./met_office.py) }}
+
+environment:
+  APPLICATIONINSIGHTS_CONNECTION_STRING: ${{ secrets.task-application-insights-connection-string }}
+
+collections:
+  - id: met-office-global-deterministic-height-level
+    template: ${{ local.path(./collection/met-office-global-deterministic-near-surface-level) }}
+    class: met_office:MetOfficeCollection
+    asset_storage:
+      - uri: blob://ukmoforecasts/staging/global/near-surface
+        chunks:
+          options:
+            min_depth: 1
+            max_depth: 1
+            chunk_length: 20000
+    chunk_storage:
+      uri: blob://ukmoforecasts/staging-info/pctasks-chunks/

datasets/met-office/met_office.py

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+from typing import Union
+
+from pctasks.core.models.task import WaitTaskResult
+from pctasks.core.storage import StorageFactory
+from pctasks.dataset.collection import Collection
+from pystac import Item
+from stactools.met_office_deterministic import stac
+
+
+class MetOfficeCollection(Collection):
+    @classmethod
+    def create_item(
+        cls, asset_uri: str, storage_factory: StorageFactory
+    ) -> Union[list[Item], WaitTaskResult]:
+        storage = storage_factory.get_storage(asset_uri)
+        hrefs = list(storage.get_url(path) for path in storage.list_files())
+        items = stac.create_items(hrefs)
+        return items

datasets/met-office/requirements.txt

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+stactools-met-office-deterministic==0.2.0