Make the latency/fps setting per camera instead of global (#2260)

There's a new `low latency mode` switch on the input tab.

This replaces use_new_cscore_frametime and makes it per pipeline.

<img width="684" height="535" alt="image"
src="https://github.com/user-attachments/assets/a7ba8bc0-69b6-44f3-83e3-9b88d8219dfa"
/>

The default behavior is still to block for new frames (ie, preserve old
behavior)

---------

Co-authored-by: Matt Morley <matthew.morley.ca@gmail.com>

photon-client/src/components/dashboard/tabs/InputTab.vue

@@ -158,6 +158,16 @@ const interactiveCols = computed(() =>
         (args) => useCameraSettingsStore().changeCurrentPipelineSetting({ cameraWhiteBalanceTemp: args }, false)
       "
     />
+    <pv-switch
+      v-model="useCameraSettingsStore().currentPipelineSettings.blockForFrames"
+      :disabled="!useCameraSettingsStore().currentCameraSettings.matchedCameraInfo.PVUsbCameraInfo"
+      label="Low Latency Mode"
+      :switch-cols="interactiveCols"
+      tooltip="When enabled, USB cameras wait for the next camera frame for lowest latency. When disabled, uses the most recent available frame for higher FPS."
+      @update:modelValue="
+        (args) => useCameraSettingsStore().changeCurrentPipelineSetting({ blockForFrames: args }, false)
+      "
+    />
     <pv-select
       v-model="useCameraSettingsStore().currentPipelineSettings.inputImageRotationMode"
       label="Orientation"