Adds scrollSensitivity option for scrolling speed

src/common/services/OptionsService.ts

@@ -33,6 +33,7 @@ export const DEFAULT_OPTIONS: ITerminalOptions = Object.freeze({
   letterSpacing: 0,
   logLevel: 'info',
   scrollback: 1000,
+  scrollSensitivity: 1,
   screenReaderMode: false,
   macOptionIsMeta: false,
   macOptionClickForcesSelection: false,
@@ -121,6 +122,12 @@ export class OptionsService implements IOptionsService {
           throw new Error(`${key} cannot be less than 0, value: ${value}`);
         }
         break;
+      case 'fastScrollSensitivity':
+      case 'scrollSensitivity':
+        if (value <= 0) {
+          throw new Error(`${key} cannot be less than or equal to 0, value: ${value}`);
+        }
+        break;
     }
     return value;
   }

src/common/services/Services.ts

@@ -196,6 +196,7 @@ export interface IPartialTerminalOptions {
   rows?: number;
   screenReaderMode?: boolean;
   scrollback?: number;
+  scrollSensitivity?: number;
   tabStopWidth?: number;
   theme?: ITheme;
   windowsMode?: boolean;
@@ -227,6 +228,7 @@ export interface ITerminalOptions {
   rows: number;
   screenReaderMode: boolean;
   scrollback: number;
+  scrollSensitivity: number;
   tabStopWidth: number;
   theme: ITheme;
   windowsMode: boolean;