Add database creation and test data insert scripts

Use these files to generate a test database. This will also allow
for the tracking of schema changes.

_sql/Create_Table_Episodes.sql

@@ -0,0 +1,13 @@
+CREATE TABLE Episodes (
+	id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+	correspondent_id INTEGER NOT NULL,
+	is_explicit BOOLEAN DEFAULT 1 NOT NULL,
+	submitted DATETIME NOT NULL,
+	published DATETIME,
+	license VARCHAR(25) DEFAULT 'CC BY-SA 4.0' NOT NULL,
+	title VARCHAR(100) NOT NULL,
+	summary VARCHAR(100) NOT NULL,
+	series VARCHAR(100),
+	show_notes TEXT NOT NULL,
+	CONSTRAINT Episodes_FK FOREIGN KEY (correspondent_id) REFERENCES Episodes(id)
+);