fgm/htmx-demo: HTMX tutorial code based on the https://hypermedia.systems/ book. @ ch01-contacts_app

Frédéric G. MARAND d6575bd3a6 Raw port of contacts.app from Python Flask to Go. First compiling version.		11 月之前
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public	d6575bd3a6 Raw port of contacts.app from Python Flask to Go. First compiling version.	11 月之前
templates	d6575bd3a6 Raw port of contacts.app from Python Flask to Go. First compiling version.	11 月之前
web.go	d6575bd3a6 Raw port of contacts.app from Python Flask to Go. First compiling version.	11 月之前