Add metadata center documents for 5.x

* new package for schema runtime context

* modify constructor

buried shardingDatasource and shardingTable metrics.

* remove ShardingSphereRuleCondition

* remove LocalShadowRuleCondition

* remove LocalShardingRuleCondition

* rename LocalShardingRuleCondition to LocalRuleCondition

* refactor sharding-jdbc-spring-boot-starter's package

* refactor SpringBootConfiguration.JNDI_NAME to static

* remove SpringBootShadowRuleConfigurationProperties

* rename org.apache.shardingsphere.shardingjdbc.orchestration.spring.boot.rule

* rename OrchestrationSpringBootRulesConfigurationYamlSwapper

* refactor OrchestrationSpringBootConfiguration

* Add: add detail document for seata managed distributed transaction

* Fix: remove duplicated English description

* Refactor: improve the translation as king's suggestion

* Fix: format the document by remove a uesless whitespace

* Refactor: remove another duplicated whitespace

Make YAML rule configuration dynamic

* remove sharding dependency with shadow

* for code style

* refine start script for sharding-proxy

* refine start script for sharding-proxy

Refine start script for sharding-proxy

buried sharding and transaction metrics.

* move NoneTupleProcessor

* Merge ShardingSphereDataSource and AbstractDataSourceAdapter

# Conflicts:
#	sharding-proxy/sharding-proxy-backend/src/main/java/org/apache/shardingsphere/shardingproxy/backend/communication/jdbc/wrapper/PreparedStatementExecutorWrapper.java
#	sharding-proxy/sharding-proxy-backend/src/main/java/org/apache/shardingsphere/shardingproxy/backend/communication/jdbc/wrapper/StatementExecutorWrapper.java

* remove shadow datasource

* remove shadow connection;
remove shadow statement;
remove shadow judgement engine

* move Authentication to shardingsphere-common

* move master slave rule test cases to master-slave-core-common

* move auth to shardingsphere-common

Improve unit test coverage of sharding-orchestration#etcd#2

add shadow_hit_total metrics

* refactor RuntimeContext's log

* private ConfigurationLogger.log single rule

* remove null check of rule log

* Decouple ConfigurationLogger and concrete rules

# Conflicts:
#	sharding-proxy/sharding-proxy-backend/src/main/java/org/apache/shardingsphere/shardingproxy/backend/communication/jdbc/wrapper/PreparedStatementExecutorWrapper.java
#	sharding-proxy/sharding-proxy-backend/src/main/java/org/apache/shardingsphere/shardingproxy/backend/communication/jdbc/wrapper/StatementExecutorWrapper.java

* fix compile error

* rename variable name from logicSchema to schema

* #5301, refine assembly files for proxy

* #5301, refine assembly files for proxy

Merge ShardingSphereSchema and LogicSchema

#5301, separate test docker profile from distribution

add shadow-core-api module