feat: Adds text input to text search demo

[willum070]

This change adds a text search box to make the Place Text Search demo interactive, as it should be. Now readers can enter their own queries and see the result in an InfoWindow. I omitted filtering to keep things from getting too long.

[snippet-bot]

Here is the summary of changes.

You are about to add 5 region tags.

• samples/ui-kit-place-search-nearby/index.ts:57, tag maps_ui_kit_place_search_nearby_event
• samples/ui-kit-place-search-nearby/index.ts:115, tag maps_ui_kit_place_search_nearby_click_event
• samples/ui-kit-place-search-text/index.ts:29, tag maps_ui_kit_place_search_text_init_map
• samples/ui-kit-place-search-text/index.ts:55, tag maps_ui_kit_place_search_text_event_handlers
• samples/ui-kit-place-search-text/index.ts:115, tag maps_ui_kit_place_search_text_click_event

You are about to delete 5 region tags.

• samples/ui-kit-place-search-nearby/index.ts:44, tag maps_ui_kit_place_search_nearby_event
• samples/ui-kit-place-search-nearby/index.ts:90, tag maps_ui_kit_place_search_nearby_click_event
• samples/ui-kit-place-search-text/index.ts:17, tag maps_ui_kit_place_search_text_init_map
• samples/ui-kit-place-search-text/index.ts:44, tag maps_ui_kit_place_search_tex_event_handlers
• samples/ui-kit-place-search-text/index.ts:104, tag maps_ui_kit_place_search_text_click_event

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