feat: prepare app for upgrade

[RiccardoM]

Description

This PR adds an upgrade handler to make sure that the testnet can be upgraded from the current v1.0.0 version to the new v1.1.0 version properly.

It also includes some code fixes like missing autocli configurations and services registering.

To make sure that upgrade goes smoothly, some migration implementations have been added to properly set the params of new modules to default values. Also, the params for the x/assets module has been removed as it was empty and not used inside the codebase.

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[hallazzang]

LGTM!