added new config


storage:
type: sqlite #or mariadb
mariadb:
host: localhost
port: 3306
database: yov
username: root
password: ""

use-ssl: false
allow-public-key-retrieval: true
server-timezone: "UTC"
session-variables: "sql_mode=''"

table: "variables"
key-column: "key"
value-column: "value"
table-engine: "InnoDB"
table-charset: "utf8mb4"

hikari:
maximum-pool-size: 5
minimum-idle: 1
connection-timeout: 5000
idle-timeout: 60000
max-lifetime: 1800000
cache-prep-stmts: true
prep-stmt-cache-size: 250
prep-stmt-cache-sql-limit: 2048
pool-name: "YOV-POOL"
initialization-fail-timeout: -1
connection-test-query: "SELECT 1"

and fixed some db problems