FINERACT-2298: migrate Standing Instructions to CommandDispatcher

[aditinikam]

Migrate the Standing Instructions module off the legacy CommandWrapperBuilder -> logCommandSource -> @CommandType (JsonCommand) write path onto the typed CommandDispatcher (CQRS) infrastructure, fully JsonCommand-free.

• API resource now injects CommandDispatcher and dispatches typed StandingInstruction{Create,Update,Delete}Command; keeps the PUT ?command=update|delete contract.
• New typed StandingInstructionWriteService + command handlers do locale-aware parsing (DateTimeFormatter), validation, account-transfer assembly (new ID-based AccountTransferDetailAssembler overloads) and typed AccountTransferStandingInstruction.update(...).
• Reads: StandingInstructionReadPlatformService renamed to StandingInstructionReadService; inline read permission checks removed in favour of declarative SecurityConfig GET matchers.
• SecurityConfig adds GET/POST/PUT matchers for /standinginstructions (READ/CREATE/UPDATE+DELETE) so write authorization is enforced after the logCommandSource permission check is gone.
• Removed legacy write platform service, @CommandType handlers, StandingInstructionDataValidator, StandingInstructionAssembler, the JsonCommand AccountTransferStandingInstruction.update, and the CommandWrapperBuilder standing-instruction methods.

Description

Describe the changes made and why they were made. (Ignore if these details are present on the associated Apache Fineract JIRA ticket.)

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[Aman-Mittal]

@aditinikam SpotBugs check is failing you can run this locally with ./gradlew spotbugsMain spotbugsTest.

while we can ignore api-compatibility-check