fgm/htmx-demo: HTMX tutorial code based on the https://hypermedia.systems/ book. @ b5c72813fd4de4d7019fd4dc3530df5be13c1eba

Frédéric G. MARAND b5c72813fd Step 02: /contacts shows the index template, with working search.		7 月之前
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index.gohtml	b5c72813fd Step 02: /contacts shows the index template, with working search.	7 月之前
layout.gohtml	b5c72813fd Step 02: /contacts shows the index template, with working search.	7 月之前