feat: add core and api for PreBlock (#17468)

core/appmodule/module.go

@@ -52,6 +52,22 @@ type HasPrecommit interface {
 	Precommit(context.Context) error
 }
 
+// ResponsePreBlock represents the response from the PreBlock method.
+// It can modify consensus parameters in storage and signal the caller through the return value.
+// When it returns ConsensusParamsChanged=true, the caller must refresh the consensus parameter in the finalize context.
+// The new context (ctx) must be passed to all the other lifecycle methods.
+type ResponsePreBlock interface {
+	IsConsensusParamsChanged() bool
+}
+
+// HasPreBlocker is the extension interface that modules should implement to run
+// custom logic before BeginBlock.
+type HasPreBlocker interface {
+	AppModule
+	// PreBlock is method that will be run before BeginBlock.
+	PreBlock(context.Context) (ResponsePreBlock, error)
+}
+
 // HasBeginBlocker is the extension interface that modules should implement to run
 // custom logic before transaction processing in a block.
 type HasBeginBlocker interface {