improve json output for CommandOutput::Table

[biryukovmaxim]

{"headers": [...], "values": [[...]]} -> [{"header": "value"}]
resolve #906

[filipgolem]

Good job. I would just rename some variables (see suggestions).

[filipgolem]

Approved. Consider changing "not any not equal" to "all equal": #1723 (comment)

[maaktweluit]

Hey @biryukovmaxim

Thanks for your contribution!
The PR is approved but we need 3 more steps before we can merge this:

• Updating to master
• Checking if the automated test goth works properly after merging
• Check if there is any other tooling dependent on this

The first 2 should be simple, after updating to master we can see the goth build run and make an issue in the goth repo when it fails.

For the last one i made a note on our board, we will look into this and update you here :)

[etam]

I would suggest a further refactoring (may be as a next step after this PR), to change ResponseTable in core/serv-api/src/lib.rs from

pub struct ResponseTable {
    pub columns: Vec<String>,
    pub values: Vec<serde_json::Value>,
}

to

pub struct ResponseTable<T: serde::Serialize>(Vec<T>);

or something like that.

[nieznanysprawiciel]

We updated all tools depending on this code.
PR will be merged after tests will pass