fix: init sub commands (#3218)

* fix(init): add sub commands

* fix(init): admin user in config,
test(init): verify functions

* refactor: config, remove second commands

* refactor: init steps

* chore: fix link in readme

* chore: numerate sql files

* Update cmd/admin/initialise/sql/README.md

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

* Update cmd/admin/initialise/sql/README.md

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

* fix(init): remove unused index

* user

* fix database username in defaults.yaml

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

internal/database/config.go

@@ -14,19 +14,23 @@ const (
 type Config struct {
 	Host            string
 	Port            string
-	User            string
-	Password        string
 	Database        string
-	SSL             SSL
 	MaxOpenConns    uint32
 	MaxConnLifetime time.Duration
 	MaxConnIdleTime time.Duration
+	User
 
 	//Additional options to be appended as options=<Options>
 	//The value will be taken as is. Multiple options are space separated.
 	Options string
 }
 
+type User struct {
+	Username string
+	Password string
+	SSL      SSL
+}
+
 type SSL struct {
 	// type of connection security
 	Mode string
@@ -57,7 +61,7 @@ func (c Config) String() string {
 	fields := []string{
 		"host=" + c.Host,
 		"port=" + c.Port,
-		"user=" + c.User,
+		"user=" + c.Username,
 		"dbname=" + c.Database,
 		"application_name=zitadel",
 		"sslmode=" + c.SSL.Mode,