Issue #10924: Update SeparatorWrapCheck to use code points

[MUzairS15]

Issue #10924: Updated SeparatorWrapCheck to use code points

src % cat config.xml
<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
        "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
        "https://checkstyle.org/dtds/configuration_1_3.dtd">
<module name="Checker">
    <module name="TreeWalker">
        <module name="SeparatorWrap">
            <property name="option" value="NL"/>
        </module>
    </module>
</module>

src % cat src/main/java/Test.java 
public class Test {
        void test() {
                String s = "sda";
                /* 🎄🎄 */ s.
                        isEmpty(); // violation but not reported
                /* sda */ s.
                        isEmpty(); // violation and reported
        }

}      
                                                                                                                                                                  
src % java -jar checkstyle-10.0-all.jar -c config.xml src/main/java/Test.java
Starting audit...
[ERROR] Test.java:6:28: '.' should be on a new line. [SeparatorWrap]
Audit done.
Checkstyle ends with 1 errors.

Diff Regression config: https://gist.githubusercontent.com/MUzairS15/7241576ae68289631f7560ece75b4f2a/raw/ea1dac19a8541caa225ec90c881b81fc11f4411e/config.xml

[MUzairS15]

Github, generate report

[github-actions]

https://checkstyle-diff-reports.s3.us-east-2.amazonaws.com/8ccd631_2022103215/reports/diff/index.html

[nrmancuso]

@MUzairS15 please update PR description, CI is failing. Also, make sure that mvn clean verify passes on your local.

[nrmancuso]

Minor item:

[romani]

Ok to merge