Add a field for text alignment

config/sync/field.storage.block_content.field_text_alignment.yml

@@ -0,0 +1,27 @@
+uuid: 6deb7b46-7e0a-44da-9702-c78688cbca6e
+langcode: en
+status: true
+dependencies:
+  module:
+    - block_content
+    - options
+id: block_content.field_text_alignment
+field_name: field_text_alignment
+entity_type: block_content
+type: list_string
+settings:
+  allowed_values:
+    -
+      value: left
+      label: Left
+    -
+      value: centre
+      label: Centre
+  allowed_values_function: ''
+module: options
+locked: false
+cardinality: 1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false