Moving the color gutter to right

[abose]

1. Refactor to not use cm gutter apis directly and use editor gutter apis
2. code folding gutter set its width to 1.1em above gutter width of 1em. this caused the gutter to render over the left most indent line or even cursor at the beginning of the line at certain sidebar widths! Note that this appears only at certain sidebar width and doesnt come in the default sidebar width. This is an issue in all existing builds. See image:

before fix

with fix

4. Address layout issues in the color gutter.

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud