[Console] Add autocomplete for data streams (#214465)

Closes https://github.com/elastic/kibana/issues/212905

## Summary

This PR adds autocompletion for data-stream related endpoints.
Previously, it didn't work because the generated spec definitions that
were extracted from the Es specs repo were using the generic `{name}`
pattern instead of `{data_stream}`. In this PR, we override those
definition files and specify the correct pattern.

### How to test:

Test the following endpoints and make sure that data stream names are
suggested:

`GET _data_stream/{data_stream}/_stats`
`DELETE _data_stream/{data_stream}/_lifecycle`
`DELETE _data_stream/{data_stream}`
`GET _data_stream/{dataStream}/_lifecycle`
`GET _data_stream/{data_stream}`
`POST _data_stream/_migrate/{data_stream}`
`POST _data_stream/_promote/{data_stream}`
`PUT _data_stream/{data_stream}/_lifecycle`

src/platform/plugins/shared/console/server/lib/spec_definitions/json/overrides/indices.data_streams_stats.json

@@ -0,0 +1,8 @@
+{
+  "indices.data_streams_stats": {
+    "patterns": [
+      "_data_stream/_stats",
+      "_data_stream/{data_stream}/_stats"
+    ]
+  }
+}

src/platform/plugins/shared/console/server/lib/spec_definitions/json/overrides/indices.delete_data_lifecycle.json

@@ -0,0 +1,7 @@
+{
+  "indices.delete_data_lifecycle": {
+    "patterns": [
+      "_data_stream/{data_stream}/_lifecycle"
+    ]
+  }
+}

src/platform/plugins/shared/console/server/lib/spec_definitions/json/overrides/indices.delete_data_stream.json

@@ -0,0 +1,7 @@
+{
+  "indices.delete_data_stream": {
+    "patterns": [
+      "_data_stream/{data_stream}"
+    ]
+  }
+}

src/platform/plugins/shared/console/server/lib/spec_definitions/json/overrides/indices.get_data_lifecycle.json

@@ -0,0 +1,7 @@
+{
+  "indices.get_data_lifecycle": {
+    "patterns": [
+      "_data_stream/{dataStream}/_lifecycle"
+    ]
+  }
+}

src/platform/plugins/shared/console/server/lib/spec_definitions/json/overrides/indices.get_data_stream.json

@@ -0,0 +1,8 @@
+{
+  "indices.get_data_stream": {
+    "patterns": [
+      "_data_stream",
+      "_data_stream/{data_stream}"
+    ]
+  }
+}

src/platform/plugins/shared/console/server/lib/spec_definitions/json/overrides/indices.migrate_to_data_stream.json

@@ -0,0 +1,7 @@
+{
+  "indices.migrate_to_data_stream": {
+    "patterns": [
+      "_data_stream/_migrate/{data_stream}"
+    ]
+  }
+}

src/platform/plugins/shared/console/server/lib/spec_definitions/json/overrides/indices.promote_data_stream.json

@@ -0,0 +1,7 @@
+{
+  "indices.promote_data_stream": {
+    "patterns": [
+      "_data_stream/_promote/{data_stream}"
+    ]
+  }
+}

src/platform/plugins/shared/console/server/lib/spec_definitions/json/overrides/indices.put_data_lifecycle.json

@@ -0,0 +1,7 @@
+{
+  "indices.put_data_lifecycle": {
+    "patterns": [
+      "_data_stream/{data_stream}/_lifecycle"
+    ]
+  }
+}