Ignore cookie-database sites in tracker mapping

Cookie-database and consent-directory sites (Cookifi, Cookiepedia,
cookiedatabase.org, CookieServe, ...) rank highly in web search only
because they catalog cookies, not because they set them. The mapping
agent could attribute a tracker to the directory operator itself
instead of the vendor the page names.

Instruct the agent to treat such results as reference directories and
extract the named vendor, never the operator, while keeping a CMP's own
product cookie attributable (OptanonConsent -> OneTrust, CookieConsent
-> Cookiebot). Add a conservative code backstop that discards
attributions to pure aggregators, scoped to exclude CMP vendors so
legitimate own-cookie attributions survive.

Signed-off-by: Émile Ré <emile@probo.com>

pkg/cookiebanner/tracker_mapping_agent_test.go

@@ -92,6 +92,39 @@ func TestNameMatchesSiteDomain(t *testing.T) {
 	}
 }
 
+func TestNameIsCookieDatabaseAggregator(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name     string
+		vendor   string
+		expected bool
+	}{
+		{name: "cookifi is denied", vendor: "Cookifi", expected: true},
+		{name: "cookiepedia is denied", vendor: "cookiepedia", expected: true},
+		{name: "cookie database is denied", vendor: "Cookie Database", expected: true},
+		{name: "cookieserve is denied", vendor: "CookieServe", expected: true},
+		{name: "spacing and casing insensitive", vendor: "  COOK IFI ", expected: true},
+		{name: "punctuation insensitive", vendor: "Cookie_Database", expected: true},
+		{name: "onetrust is allowed", vendor: "OneTrust", expected: false},
+		{name: "cookiebot is allowed", vendor: "Cookiebot", expected: false},
+		{name: "cookieyes is allowed", vendor: "CookieYes", expected: false},
+		{name: "cookie-script is allowed", vendor: "Cookie-Script", expected: false},
+		{name: "unrelated vendor is allowed", vendor: "Google Analytics", expected: false},
+		{name: "empty name", vendor: "", expected: false},
+	}
+
+	for _, tt := range tests {
+		t.Run(
+			tt.name,
+			func(t *testing.T) {
+				t.Parallel()
+				assert.Equal(t, tt.expected, nameIsCookieDatabaseAggregator(tt.vendor))
+			},
+		)
+	}
+}
+
 func TestNormalizeAlnum(t *testing.T) {
 	t.Parallel()