feat: add task activity

internal/db/query/task_activity.sql

@@ -0,0 +1,22 @@
+-- name: CreateTaskActivity :one
+INSERT INTO task_activity (task_id, caused_by, created_at, activity_type_id, data)
+  VALUES ($1, $2, $3, $4, $5) RETURNING *;
+
+-- name: GetActivityForTaskID :many
+SELECT * FROM task_activity WHERE task_id = $1 AND active = true;
+
+-- name: GetTemplateForActivityID :one
+SELECT template FROM task_activity_type WHERE task_activity_type_id = $1;
+
+-- name: GetLastMoveForTaskID :one
+SELECT active, created_at, data->>'CurTaskGroupID' AS cur_task_group_id, data->>'PrevTaskGroupID' AS prev_task_group_id FROM task_activity
+  WHERE task_id = $1 AND activity_type_id = 2 AND created_at >= NOW() - INTERVAL '5 minutes'
+ORDER BY created_at DESC LIMIT 1;
+
+-- name: SetInactiveLastMoveForTaskID :exec
+UPDATE task_activity SET active = false WHERE task_activity_id = (
+  SELECT task_activity_id FROM task_activity AS ta
+  WHERE ta.activity_type_id = 2 AND ta.task_id = $1
+  AND ta.created_at >= NOW() - INTERVAL '5 minutes'
+  ORDER BY created_at DESC LIMIT 1
+);