KASM-5466 add text rotation yaml config

spec/fixtures/defaults_config.yaml

@@ -50,6 +50,12 @@ data_loss_prevention:
     # location: 10,10
     # tint: 255,20,20,128
     # repeat_spacing: 10
+    #text:
+      # template: "${USER} %H:%M"
+      # font: auto
+      # font_size: 48
+      # timezone_name: Australia/Adelaide
+      # rotation: 0
   logging:
     level: off
 

unix/kasmvnc_defaults.yaml

@@ -100,6 +100,7 @@ data_loss_prevention:
       # font: auto
       # font_size: 48
       # timezone_name: Australia/Adelaide
+      # rotation: 0
   logging:
     # "verbose" SETTING LOGS YOUR PRIVATE INFORMATION. Keypresses and clipboard content
     level: off

unix/vncserver

@@ -1862,6 +1862,24 @@ sub DefineConfigToCLIConversion {
           $offset_in_seconds/60;
         }
     }),
+    KasmVNC::CliOption->new({
+        name => 'DLP_WatermarkTextAngle',
+        configKeys => [
+          KasmVNC::ConfigKey->new({
+            name => "data_loss_prevention.watermark.text.angle",
+            validator => KasmVNC::CallbackValidator->new({
+              isValidCallback => sub {
+                my $value = shift;
+
+                return 0 unless $value =~ /^\d+$/;
+
+                $value >= -359 && $value <= 359;
+              },
+              errorMessage => "must be in range -359..359"
+            }),
+          })
+        ]
+    }),
     KasmVNC::CliOption->new({
         name => 'DLP_Log',
         configKeys => [