feat: [maps-places] new module for maps-places

[alicejli]

Updated #9419 to match other maps modules.

Command to execute:

python3.9 generation/new_client/new-client.py generate \
  --api_shortname=maps-places \
  --proto-path=google/maps/places \
  --name-pretty="Places API (New)" \
  --product-docs="https://developers.google.com/maps/documentation/places/web-service/" \
  --api-description="The Places API allows developers to access a variety of search and
    retrieval endpoints for a Place." \
  --api-id=places.googleapis.com \
  --cloud-api=false \
  --requires-billing=true \
  --distribution-name="com.google.maps:google-maps-places"

[snippet-bot]

Here is the summary of changes.

You are about to add 7 region tags.

• java-maps-places/samples/snippets/generated/com/google/maps/places/v1/places/create/SyncCreateSetCredentialsProvider.java:19, tag places_v1_generated_Places_Create_SetCredentialsProvider_sync
• java-maps-places/samples/snippets/generated/com/google/maps/places/v1/places/create/SyncCreateSetCredentialsProvider1.java:19, tag places_v1_generated_Places_Create_SetCredentialsProvider1_sync
• java-maps-places/samples/snippets/generated/com/google/maps/places/v1/places/create/SyncCreateSetEndpoint.java:19, tag places_v1_generated_Places_Create_SetEndpoint_sync
• java-maps-places/samples/snippets/generated/com/google/maps/places/v1/places/searchtext/AsyncSearchText.java:19, tag places_v1_generated_Places_SearchText_async
• java-maps-places/samples/snippets/generated/com/google/maps/places/v1/places/searchtext/SyncSearchText.java:19, tag places_v1_generated_Places_SearchText_sync
• java-maps-places/samples/snippets/generated/com/google/maps/places/v1/placessettings/searchtext/SyncSearchText.java:19, tag places_v1_generated_PlacesSettings_SearchText_sync
• java-maps-places/samples/snippets/generated/com/google/maps/places/v1/stub/placesstubsettings/searchtext/SyncSearchText.java:19, tag places_v1_generated_PlacesStubSettings_SearchText_sync

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[alicejli]

Adding "do not merge" until the team confirms on b/281587773 they are okay with releasing.