🐛 fix(GenerationContext.py): fix import statements and add support for captioning engine

✨ feat(GenerationContext.py): add support for captioning engine in the GenerationContext class
The import statement for the `moviepy.editor` module is changed to `moviepy.editor as mp` to improve code readability. Additionally, the `gradio` module is imported as `gr` to improve code readability. The `GenerationContext` class now includes a `captioningengine` parameter and initializes a `captioningengine` attribute. The `setup_dir` method is modified to include a call to create a directory for the output files. The `get_file_path` method is modified to return the file path based on the output directory. The `process` method is modified to include additional steps for captioning. The `timed_script` attribute is added to store the result of the `ttsengine.synthesize` method. The `captioningengine` is used to generate captions and store them in the `captions` attribute. The final video is rendered using the `moviepy` library and saved as "final.mp4" in the output directory.

src/engines/__init__.py

@@ -1,14 +1,39 @@
+from typing import TypedDict
 from .BaseEngine import BaseEngine
+from .NoneEngine import NoneEngine
 from . import TTSEngine
 from . import ScriptEngine
 from . import LLMEngine
+from . import CaptioningEngine
 
-ENGINES = {
-    "SimpleLLMEngine": [LLMEngine.OpenaiLLMEngine, LLMEngine.AnthropicLLMEngine],
-    "PowerfulLLMEngine": [LLMEngine.OpenaiLLMEngine, LLMEngine.AnthropicLLMEngine],
-    "TTSEngine": [TTSEngine.CoquiTTSEngine, TTSEngine.ElevenLabsTTSEngine],
-    "ScriptEngine": [
-        ScriptEngine.ShowerThoughtsScriptEngine,
-        ScriptEngine.CustomScriptEngine,
-    ],
+
+class EngineDict(TypedDict):
+    classes: list[BaseEngine]
+    multiple: bool
+
+
+ENGINES: dict[str, EngineDict] = {
+    "SimpleLLMEngine": {
+        "classes": [LLMEngine.OpenaiLLMEngine, LLMEngine.AnthropicLLMEngine],
+        "multiple": False,
+    },
+    "PowerfulLLMEngine": {
+        "classes": [LLMEngine.OpenaiLLMEngine, LLMEngine.AnthropicLLMEngine],
+        "multiple": False,
+    },
+    "ScriptEngine": {
+        "classes": [
+            ScriptEngine.ShowerThoughtsScriptEngine,
+            ScriptEngine.CustomScriptEngine,
+        ],
+        "multiple": False,
+    },
+    "TTSEngine": {
+        "classes": [TTSEngine.CoquiTTSEngine, TTSEngine.ElevenLabsTTSEngine],
+        "multiple": False,
+    },
+    "CaptioningEngine": {
+        "classes": [CaptioningEngine.SimpleCaptioningEngine, NoneEngine],
+        "multiple": False,
+    },
 }