Implement SA0002 (InvalidSettingsFile)

[sharwell]

Fixes #2029

Screenshot of a report when the syntax error matches the one described in #2028:

[codecov-io]

Current coverage is 93.38%

Merging #2032 into master will increase coverage by +0.01% as of 2679bcb

@@            master   #2032   diff @@
======================================
  Files          561     563     +2
  Stmts        35587   35642    +55
  Branches      2284    2289     +5
  Methods                          
======================================
+ Hit          33228   33283    +55
- Partial        748     752     +4
+ Missed        1611    1607     -4

Review entire Coverage Diff as of 2679bcb

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[vweijsters]

❓ Would it be possible to suppress the call stack dump, as it does not really provide any useful information?

[sharwell]

@vweijsters It has the line and position numbers within the file where the problem occurred. It might not be exact, but it should be close. Also keep the following in mind:

• The description is hidden by default. You have to expand the line in the error list to see them.
• It's possible the stack trace could save time if/when issues are reported. In those cases, it's much easier to copy one that's provided than to explain to users how to attach the debugger and find out.

[vweijsters]

@sharwell The line and position numbers are in the exception message, so there is no need to have the stack trace for that. Besides that, the stack trace is probably not really useful for debugging, as it will only be dumped for JsonException.

[vweijsters]

👍 Looks good otherwise

[sharwell]

Updated to only show this:

[vweijsters]

👍