Add archival version option to Bank RPC, README and test cases

[dubbelosix]

Description

In order to make use of archival version support from the RPC level, we decided to explicitly add "version" as a parameter to any rpc query needing to make use of it.

diff illustrating the changes to add versioning to a specific RPC query

     pub fn balance_of(
         &self,
+        version: Option<u64>,
         user_address: C::Address,
         token_address: C::Address,
         working_set: &mut WorkingSet<C>,
     ) -> RpcResult<BalanceResponse> {
+        if let Some(v) = version {
+            working_set.set_archival_version(v)
+        }
         Ok(BalanceResponse {
             amount: self.get_balance_of(user_address, token_address, working_set),
         })

Changes

• Modified bank module balance_of and supply_of
• Modified RPC_WALKTHROUGH.md readme with instructions for archival support
• Modified examples/demo-rollup/tests/bank/mod.rs to have an integration test for querying previous versions

[bkolad]

LGTM, can you please update sov-rollup-starter as well after this PR is merged.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (7d97267) 79.1% compared to head (db84955) 79.1%.

❗ Current head db84955 differs from pull request most recent head 4136827. Consider uploading reports for the commit 4136827 to get more accurate results

Additional details and impacted files

Files	Coverage Δ
...ystem/module-implementations/sov-bank/src/query.rs	96.6% <87.5%> (-3.4%)	⬇️
module-system/sov-cli/src/workflows/rpc.rs	0.0% <0.0%> (ø)

... and 1 file with indirect coverage changes