feat(database): add PostgreSQL support and fix Windows subprocess encoding

.env.example

@@ -0,0 +1,46 @@
+# MySQL Configuration
+MYSQL_DB_PWD=123456
+MYSQL_DB_USER=root
+MYSQL_DB_HOST=localhost
+MYSQL_DB_PORT=3306
+MYSQL_DB_NAME=media_crawler
+
+# Redis Configuration
+REDIS_DB_HOST=127.0.0.1
+REDIS_DB_PWD=123456
+REDIS_DB_PORT=6379
+REDIS_DB_NUM=0
+
+# MongoDB Configuration
+MONGODB_HOST=localhost
+MONGODB_PORT=27017
+MONGODB_USER=
+MONGODB_PWD=
+MONGODB_DB_NAME=media_crawler
+
+# PostgreSQL Configuration
+POSTGRES_DB_PWD=123456
+POSTGRES_DB_USER=postgres
+POSTGRES_DB_HOST=localhost
+POSTGRES_DB_PORT=5432
+POSTGRES_DB_NAME=media_crawler
+
+# Proxy Configuration (Wandou HTTP)
+# your_wandou_http_app_key
+WANDOU_APP_KEY=
+
+# Proxy Configuration (Kuaidaili)
+# your_kuaidaili_secret_id
+KDL_SECERT_ID=
+# your_kuaidaili_signature
+KDL_SIGNATURE=
+# your_kuaidaili_username
+KDL_USER_NAME=
+# your_kuaidaili_password
+KDL_USER_PWD=
+
+# Proxy Configuration (Jisu HTTP)
+# Get JiSu HTTP IP extraction key value
+jisu_key=
+# Get JiSu HTTP IP extraction encryption signature
+jisu_crypto=