ADD database integration & ADD simple dummy user entity

src/main/resources/db/data.sql

@@ -0,0 +1,12 @@
+INSERT INTO users (id, google_id, username, email, name)
+VALUES
+  (1, 'google-uid-001', 'alice', 'alice@example.com', 'Alice Example'),
+  (2, 'google-uid-002', 'bob', 'bob@example.com', 'Bob Example'),
+  (3, 'google-uid-003', 'carol', 'carol@example.com', 'Carol Example'),
+  (4, 'google-uid-004', 'wizard42', 'gandalf@middle.earth', 'Gandalf the Grey'),
+  (5, 'google-uid-005', 'catnap', 'whiskers@meowmail.com', 'Sir Whiskers McFluff'),
+  (6, 'google-uid-006', 'robotron', 'bender@futurama.tv', 'Bender Rodriguez'),
+  (7, 'google-uid-007', 'unicorn', 'sparkle@rainbow.com', 'Princess Sparklehoof'),
+  (8, 'google-uid-008', 'pirate', 'blackbeard@seas.com', 'Edward Teach'),
+  (9, 'google-uid-009', 'detective', 'holmes@bakerstreet.uk', 'Sherlock Holmes'),
+  (10, 'google-uid-010', 'timey', 'docbrown@delorean.net', 'Dr. Emmett Brown');