feat: add logging and collector implementations

- Introduced `hertzx` package with `NewHertz` function for server initialization.
- Implemented `logx` package with various log collectors: Console, Loki, Elasticsearch, and Prometheus.
- Added `Logger` struct to manage logging levels and collectors.
- Created environment variable loading functionality in `osx` package to support configuration.
- Enhanced logging capabilities with structured log entries and asynchronous collection.

dbx/sqlite.go

@@ -0,0 +1,22 @@
+package dbx
+
+import (
+	"github.com/glebarez/sqlite"
+	"gorm.io/gorm"
+)
+
+func GetSQLiteDB(cfg *DBConfig, dbName string) *gorm.DB {
+	db, err := getSQLiteInstance(cfg, dbName)
+	if err != nil {
+		panic("failed to connect to SQLite database: " + err.Error())
+	}
+	return db
+}
+
+func getSQLiteInstance(cfg *DBConfig, dbName string) (*gorm.DB, error) {
+	// 对 sqlite, dbName 可以是文件路径或 ':memory:'
+	return gorm.Open(
+		sqlite.Open(dbName),
+		&gorm.Config{},
+	)
+}