Add ModeContextManager interface and split ClusterModeContextManager and StandaloneModeContextManager

[zhaojinchao95]

For #23042

[codecov-commenter]

Codecov Report

Merging #23061 (6874a1c) into master (6e5f964) will decrease coverage by 0.06%.
The diff coverage is 33.04%.

@@             Coverage Diff              @@
##             master   #23061      +/-   ##
============================================
- Coverage     50.05%   49.99%   -0.07%     
+ Complexity     2428     2426       -2     
============================================
  Files          4110     4112       +2     
  Lines         57341    57376      +35     
  Branches       9041     9049       +8     
============================================
- Hits          28704    28683      -21     
- Misses        26130    26185      +55     
- Partials       2507     2508       +1     

Impacted Files	Coverage Δ
...shardingsphere/infra/instance/InstanceContext.java	35.29% <ø> (ø)
...tsql/ral/UpdatableGlobalRuleRALBackendHandler.java	0.00% <0.00%> (ø)
.../updatable/ImportDatabaseConfigurationHandler.java	18.30% <0.00%> (ø)
...nager/standalone/StandaloneModeContextManager.java	7.69% <7.69%> (ø)
...ode/manager/cluster/ClusterModeContextManager.java	10.00% <10.00%> (ø)
...he/shardingsphere/mode/manager/ContextManager.java	54.23% <70.00%> (+1.44%)	⬆️
.../manager/cluster/ClusterContextManagerBuilder.java	84.37% <100.00%> (+1.61%)	⬆️
...er/standalone/StandaloneContextManagerBuilder.java	84.21% <100.00%> (+4.21%)	⬆️
...handler/database/CreateDatabaseBackendHandler.java	100.00% <100.00%> (ø)
...d/handler/database/DropDatabaseBackendHandler.java	83.33% <100.00%> (ø)
... and 67 more

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