DB Migration tooling

.changelog/unreleased/improvements/2814-global-deserializer-map.md

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+ - This PR adds a proc macro that registers the deserializer of a type in a hashmap. This allows us to verify that 
+   data blob deserializes correctly if we are in possession of the hash map key. ([\#2814](https://github.com/anoma/namada/pull/2814))

.changelog/unreleased/improvements/2835-db-migrations.md

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+ - Adds tools to create json files to change db keys and various debugging and dry running logic. ([\#2835](https://github.com/anoma/namada/pull/2835))

.changelog/unreleased/improvements/2839-db-patter-iter.md

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+ - When iterating over key prefixes, we can additionally filter out keys based on a regex. ([\#2839](https://github.com/anoma/namada/pull/2839))