Auto detect hardware acceleration on Linux (#254)

__tests__/input-validator.test.ts

@@ -211,10 +211,10 @@ describe('disable-linux-hw-accel validator tests', () => {
     const func = () => {
       validator.checkDisableLinuxHardwareAcceleration('yes');
     };
-    expect(func).toThrowError(`Input for input.disable-linux-hw-accel should be either 'true' or 'false'.`);
+    expect(func).toThrowError(`Input for input.disable-linux-hw-accel should be either 'true' or 'false' or 'auto'.`);
   });
 
-  it('Validates successfully if disable-linux-hw-accel is either true or false', () => {
+  it('Validates successfully if disable-linux-hw-accel is either true or false or auto', () => {
     const func1 = () => {
       validator.checkDisableLinuxHardwareAcceleration('true');
     };
@@ -224,6 +224,11 @@ describe('disable-linux-hw-accel validator tests', () => {
       validator.checkDisableLinuxHardwareAcceleration('false');
     };
     expect(func2).not.toThrow();
+
+    const func3 = () => {
+      validator.checkDisableLinuxHardwareAcceleration('auto');
+    };
+    expect(func3).not.toThrow();
   });
 });