Add Essence 520 minimal DB, configs, and login/game Docker profile.

docker/initdb/01_login_essence520.sql

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+-- Login DB: L2J Mobius / Essence (совместимость с клиентом protocol 520).
+-- Пароль: Base64(SHA1(UTF-8 пароль)) — см. LoginController Mobius.
+
+CREATE TABLE IF NOT EXISTS accounts (
+  login VARCHAR(45) NOT NULL PRIMARY KEY,
+  password VARCHAR(45),
+  lastactive BIGINT,
+  "accessLevel" INTEGER NOT NULL DEFAULT 0,
+  "lastIP" VARCHAR(20),
+  "lastServer" INTEGER DEFAULT 1,
+  "pcIp" VARCHAR(20),
+  hop1 VARCHAR(20),
+  hop2 VARCHAR(20),
+  hop3 VARCHAR(20),
+  hop4 VARCHAR(20)
+);
+
+CREATE TABLE IF NOT EXISTS account_data (
+  account_name VARCHAR(45) NOT NULL,
+  var VARCHAR(20) NOT NULL,
+  value VARCHAR(255),
+  PRIMARY KEY (account_name, var),
+  CONSTRAINT fk_account_data_login FOREIGN KEY (account_name)
+    REFERENCES accounts (login) ON DELETE CASCADE
+);
+
+CREATE TABLE IF NOT EXISTS accounts_ipauth (
+  login VARCHAR(45) NOT NULL,
+  ip VARCHAR(15) NOT NULL,
+  type VARCHAR(15) NOT NULL,
+  PRIMARY KEY (login, ip)
+);
+
+CREATE TABLE IF NOT EXISTS gameservers (
+  server_id INTEGER NOT NULL PRIMARY KEY,
+  hexid VARCHAR(50) NOT NULL,
+  host VARCHAR(50) NOT NULL
+);