Refactor [su_ajax|admin_cmd|api_webhook] methods into single /api/ interface

www/extern/egg/db_queryyear.sql

@@ -0,0 +1,10 @@
+SELECT commitdate AS commitdate, COUNT(*) as count FROM
+	(
+		SELECT
+			[hash] AS hash, min([author_email]) AS mail1, min([committer_email]) AS mail2, date(min([date])) AS commitdate
+		FROM COMMITS
+		GROUP BY hash
+		HAVING (strftime('%Y', commitdate) = :year AND (/*{INDETITY_COND}*/))
+	)
+GROUP BY commitdate
+ORDER BY commitdate