feat: Migrate geocoding-simple

[willum070]

This PR makes the following changes:

• Migrates geocoding-simple to js-api-samples.
• Updates to use gmp-map and dynamic library loading.
• Changes UI to declarative HTML.
• UI updates to improve the visual appearance.

[snippet-bot]

Here is the summary of changes.

You are about to add 3 region tags.

• samples/geocoding-simple/index.html:7, tag maps_geocoding_simple
• samples/geocoding-simple/index.ts:7, tag maps_geocoding_simple
• samples/geocoding-simple/style.css:6, tag maps_geocoding_simple

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