feat(sync): Always print summary

[cwurm]

When decK encounters an error (e.g. invalid plugin configuration) it will currently not print the summary, making it hard to know what was still changed despite the error.

This small change makes sure the summary is printed even in that case and adds an Errors: field when there was at least one error.

Sample output:

$ ./deck sync -s .
creating consumer jwt-user
...
...
...
creating plugin openid-connect for route 8e4bf008-c470-4456-b333-7094c7089070
Summary:
  Created: 112
  Updated: 15
  Deleted: 0
  Errors: 2

Error: 2 errors occurred:
	while processing event: {Create} failed: 400 Bad Request {"message":"2 schema violations (only one of these fields must be non-empty: 'config.aws_region', 'config.host'; config.aws_region1: unknown field)","name":"schema violation","fields":{"config":{"aws_region1":"unknown field"},"@entity":["only one of these fields must be non-empty: 'config.aws_region', 'config.host'"]},"code":2}
	while processing event: {Create} failed: 400 Bad Request {"message":"3 schema violations (only one of these fields must be non-empty: 'config.allow', 'config.deny'; at least one of these fields must be non-empty: 'config.allow', 'config.deny'; config.whitelist1: unknown field)","name":"schema violation","fields":{"config":{"whitelist1":"unknown field"},"@entity":["only one of these fields must be non-empty: 'config.allow', 'config.deny'","at least one of these fields must be non-empty: 'config.allow', 'config.deny'"]},"code":2}

[hbagdi]

Printing and returning error will result in printing of errors twice.
I'd recommend returning the error and not printing the error here as returning the error does two things:

• print the error
• make the deck unix process exit with a non-zero exit code

[cwurm]

Sure, we don't have to print the errors in the summary. I removed it - now the existing code has just changed order.