api: Add go files

I know this is a huge commit, but I can't be bothered to check
this in part by part.

api/domain_view_record.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"time"
+)
+
+func domainViewRecord(domain string, commenterHex string) {
+	statement := `
+		INSERT INTO
+		views  (domain, commenterHex, viewDate)
+		VALUES ($1,     $2,           $3      );
+	`
+	_, err := db.Exec(statement, domain, commenterHex, time.Now().UTC())
+	if err != nil {
+		logger.Warningf("cannot insert views: %v", err)
+	}
+}