feat(slack): truncate message #292
Merged
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Add render option to truncate the output table to a number of runes. A 4000 chars limit is then set to the Slack message to prevent #272
The truncate is slightly smart since it leaves the footer where the command to get the attestation info stays intact.
Note: ideally, eventually, we should do custom markup for Slack using Slack blocks, but this feature at least prevents broken rendering in the case of overflow.
Closes #272