chore: initial commit

internal/db/schema/post_stats.sql

@@ -0,0 +1,8 @@
+CREATE TABLE post_stats
+(
+    post_id        INTEGER PRIMARY KEY,
+    view           INTEGER     NOT NULL DEFAULT 0
+);
+
+COMMENT ON COLUMN post_stats.post_id IS '文章id';
+COMMENT ON COLUMN post_stats.view IS '文章阅读量';