First stage of parameter CLI admin

[mkysel]

More to come. This just does the IU as a POC. The same command will do GM as well. We also need pause and unpause.

[graphite-app]

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[macroscopeapp]

Add get/set identity update bootstrapper address commands to the cmd/cli tool as the first stage of parameter CLI admin

This change adds subcommands to manage the identity update bootstrapper address via a new parameter administration layer and updates blockchain admins to use it.

• Add get-bootstrapper-address and set-bootstrapper-address subcommands, options, and handlers in main.go, wiring through setupParameterAdmin and setupAppChainAdmin.
• Introduce ParameterAdmin with address/uint8 get/set methods and constants in parameterAdmin.go.
• Add IAppChainAdmin and NewAppChainAdmin with GetIdentityUpdateBootstrapper and SetIdentityUpdateBootstrapper in appchainAdmin.go.
• Refactor NodeRegistryAdmin to consume ParameterAdmin in registryAdmin.go and update construction in node_registry.go.
• Extend CLI option structs for these commands in cliOptions.go.

📍Where to Start

Start with parseOptions and the new command handlers in main.go, then follow into blockchain.NewAppChainAdmin and parameter operations in appchainAdmin.go and parameterAdmin.go.

Changes since #1070 opened

• Reformatted method calls in blockchain package tests [8ea2e42]

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Macroscope summarized 8ea2e42.

[fbac]

LGTM, CI needs some polishing tho :)

Give the PoC CLI a try, so we can discuss which one is more flexible and has the best devex.

[mkysel]

Partially implements #818