ISSUE-240: Method to convert path to pattern

[mrmlnc]

What is the purpose of this pull request?

Fix #240.

The main purpose is to allow users to stop processing Windows paths in each location where this package is used, using third-party packages.

The story about automatic pattern conversion is out of the issue now, as it is a separate big layer of problems.

What changes did you make? (Give an overview)

1. The .escapePath method now escapes a different set of special characters depending on the platform. Two methods have also been added: .escapePosixPath, .escapeWindowsPath.
   1.1. Added support for escaping an escape character (\\) when it is not followed by a special character.
   1.2. On Windows, the following characters *?|[] will no longer be escaped. Because it is not possible to use these characters in a path in DOS.
2. Added the .convertPathToPattern method, which allows you to safely convert DOS paths and UNC paths into patterns. Two methods have also been added: .convertPosixPathToPattern, .convertWindowsPathToPattern.
   2.1. This allows Windows paths to be passed as patterns after they have been converted. For example, fg.convertPathToPattern('\\\\?\\c:\\Program Files (x86)') + '/**' or fg.convertPathToPattern('C://Program Files (x86)') + '/**'.
   2.2. Remove dependencies like normalize-path and slash, which we previously suggested in the documentation.

More details in the documentation: escapePath and convertPathToPattern.