feat: Add option to ignore lines before indentation change

[j-d-ha]

Added ignore-indent-change flag. When this flag is used, the line lengths of lines preceding an indentation change are ignored and exempted from shortening. When this flag is enabled, the following types of lines are impacted:

• if statements
• for statements
• switch, select, and case statements
• function and method declaration
• interface methods

This option allows for the use of golines while still conforming to the Google Go style guide guidelines for line length which say that a line should not be split before a change in indentation.

It is also worth noting that most of this functionality is already present in golines and I only needed to add code to modify how functions and methods, case calluses, and interface methods are handled for shortening.

Feature fix for #151

[seg-atlantis-prod]

Atlantis commands can't be run on fork pull requests. To enable, set --allow-fork-prs or, to disable this message, set --silence-fork-pr-errors

[seg-atlantis-prod]

Error parsing command: EOF found when expecting closing quote