Add support for ACE Editor (#319)

Author: basil

src/main/java/io/jenkins/plugins/darktheme/DarkThemeManagerFactory.java

@@ -12,6 +12,7 @@ public class DarkThemeManagerFactory extends ThemeManagerFactory {
 
     public static final String THEME_CSS = "theme.css";
     public static final String THEME_URL_NAME = "theme-dark";
+    public static final String ACE_EDITOR_THEME = "tomorrow_night";
     public static final String PRISM_THEME = "tomorrow";
 
     @DataBoundConstructor
@@ -22,6 +23,7 @@ public DarkThemeManagerFactory() {
     public Theme getTheme() {
         return Theme.builder()
                 .withCssUrl(getCssUrl())
+                .withProperty("ace-editor", "theme", ACE_EDITOR_THEME)
                 .withProperty("prism-api", "theme", PRISM_THEME)
                 .build();
     }

src/main/java/io/jenkins/plugins/darktheme/DarkThemeSystemManagerFactory.java

@@ -19,6 +19,7 @@ public DarkThemeSystemManagerFactory() {
     @Override
     public Theme getTheme() {
         return Theme.builder()
+            .withProperty("ace-editor", "theme", ACE_EDITOR_THEME)
             .withProperty("prism-api", "theme", PRISM_THEME)
             .build();
     }