Start working on tasks feature

migrations/0036.sql

@@ -0,0 +1,24 @@
+CREATE TABLE tasks (
+	id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
+	name TEXT NOT NULL UNIQUE,
+	description TEXT,
+	due DATETIME,
+	started TINYINT NOT NULL DEFAULT 0 CHECK(started IN (0, 1)),
+	done TINYINT NOT NULL DEFAULT 0 CHECK(done IN (0, 1)),
+	category_id INTEGER,
+	row_created_timestamp DATETIME DEFAULT (datetime('now', 'localtime'))
+);
+
+CREATE TABLE task_categories (
+	id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
+	name TEXT NOT NULL UNIQUE,
+	description TEXT,
+	row_created_timestamp DATETIME DEFAULT (datetime('now', 'localtime'))
+);
+
+CREATE VIEW tasks_current
+AS
+SELECT *
+FROM tasks
+WHERE due IS NULL
+	OR (due IS NOT NULL AND due > datetime('now', 'localtime'));