Add error message for 403 error on API access

[davet2001]

Proposed Changes

(Describe the changes and rationale behind them)

When trying to develop an addon, I got messages like this appearing in the logs of the addon:

parse error: Expected string key before ':' at line 1, column 4

When all I was doing was:

HOST=$(bashio::host)

It turned out this was caused by a jq statement trying to parse the string

403: Forbidden

By adding this extra error message, we give developers a bit more of a hint as to what is wrong.

Related Issues

(Github link to related issues or pull requests)

[frenck]

Thanks, @davet2001 👍

../Frenck