Improve `README` and create 2 dataflow, one for dev and one for full remote version

examples/speech-to-text/README.md

@@ -3,8 +3,29 @@
 Make sure to have, dora, pip and cargo installed.
 
 ```bash
-dora build dataflow.yml
-dora run dataflow.yml
+dora build whisper.yml
+dora run whisper.yml
 
 # Wait for the whisper model to download which can takes a bit of time.
 ```
+
+## Graph Visualization
+
+```mermaid
+
+flowchart TB
+  dora-microphone
+  dora-vad
+  dora-distil-whisper
+  dora-rerun[/dora-rerun\]
+subgraph ___dora___ [dora]
+  subgraph ___timer_timer___ [timer]
+    dora/timer/secs/2[\secs/2/]
+  end
+end
+  dora/timer/secs/2 -- tick --> dora-microphone
+  dora-microphone -- audio --> dora-vad
+  dora-vad -- audio as input --> dora-distil-whisper
+  dora-distil-whisper -- text as original_text --> dora-rerun
+
+```

examples/speech-to-text/whisper.yml

@@ -0,0 +1,33 @@
+nodes:
+  - id: dora-microphone
+    description: Microphone
+    build: pip install dora-microphone
+    path: dora-microphone
+    inputs:
+      tick: dora/timer/millis/2000
+    outputs:
+      - audio
+
+  - id: dora-vad
+    build: pip install dora-vad
+    path: dora-vad
+    inputs:
+      audio: dora-microphone/audio
+    outputs:
+      - audio
+
+  - id: dora-whisper
+    build: pip install dora-whisper
+    path: dora-whisper
+    inputs:
+      input: dora-vad/audio
+    outputs:
+      - text
+    env:
+      TARGET_LANGUAGE: english
+
+  - id: dora-rerun
+    build: pip install dora-rerun
+    path: dora-rerun
+    inputs:
+      original_text: dora-whisper/text

examples/vlm/vision_only.yml

@@ -1,41 +0,0 @@
-nodes:
-  - id: camera
-    build: pip install -e ../../node-hub/opencv-video-capture
-    path: opencv-video-capture
-    inputs:
-      tick: dora/timer/millis/50
-    outputs:
-      - image
-    env:
-      CAPTURE_PATH: 0
-      IMAGE_WIDTH: 640
-      IMAGE_HEIGHT: 480
-
-  - id: dora-qwenvl
-    build: pip install -e ../../node-hub/dora-qwenvl
-    path: dora-qwenvl
-    inputs:
-      image:
-        source: camera/image
-        queue_size: 1
-      tick: dora/timer/millis/400
-    outputs:
-      - text
-      - tick
-    env:
-      DEFAULT_QUESTION: Describe the image in a very short sentence.
-      # USE_MODELSCOPE_HUB: true
-
-  - id: plot
-    build: cargo build -p dora-rerun --release
-    path: dora-rerun
-    inputs:
-      image:
-        source: camera/image
-        queue_size: 1
-      text: dora-qwenvl/tick
-    env:
-      IMAGE_WIDTH: 640
-      IMAGE_HEIGHT: 480
-      README: |
-        # Visualization of QwenVL2