368 improve exported metrics for usage in grafana dashboards

[gianfra-t]

A display label is added of the form {collateral}_{wrapped}

Where both collateral and wrapped are formatted for display the following way:

XCM = "XCM(value)",
StellarNative = "XLM"
Native = "Native"
Stellar::AlphaNum4 {code, ..} | AlphaNum12 {code, ..} = "code"
CurrencyId::ZenlinkLPToken(token1_id, token1_type, token2_id, token2_type) = "LP_{}_{}_{}_{}", token1_id, token1_type, token2_id, token2_type)

Also appends status or type of the corresponding metric so that display name is formatted as

"{collateral}_{wrapped} - {status/type}"

[ebma]

Looks good 👍 the formatting/indentation is off though. Please run rustfmt and consider running this script to install a pre-commit hook for Spacewalk that runs rustfmt on each commit.

Ready to merge once formatting is fixed and CI passed

[gianfra-t]

Yes! it happens to me quite often that very simple clippy and format changes are off. I will install the pre-commit hook.

[gianfra-t]

@ebma any idea why the tests might be failing? When looking at the errors,op_no_destination and op_no_destination it seems to me like the Stellar test accounts might have an issue.

[ebma]

Right, I think it was related to the Stellar testnet reset but I set up the accounts again and it restarted the CI job so let's see.

[ebma]

I had another look and we need #470 to fix the tests. Once that PR is merged we can rebase this one and it should be fixed 🤞