feat(GenerationContext.py): add new file GenerationContext.py to handle the context of generation engines

feat(OpenaiLLMEngine.py): add orjson library for JSON serialization and deserialization, and implement the generate method to make API call to OpenAI chat completions endpoint

feat(__init__.py): import OpenaiLLMEngine in LLMEngine package

feat(BaseScriptEngine.py): add time_script method to the BaseScriptEngine class

feat(CustomScriptEngine.py): add new file CustomScriptEngine.py to handle custom script generation, implement generate method to return the provided script, and add get_options method to provide a textbox for the prompt input

feat(__init__.py): import CustomScriptEngine in ScriptEngine package

feat(__init__.py): import LLMEngine package and add OpenaiLLMEngine to the ENGINES dictionary

refactor(gradio_ui.py): change equal_height attribute of Row to False to allow different heights for input blocks

src/engines/ScriptEngine/CustomScriptEngine.py

@@ -0,0 +1,25 @@
+from .BaseScriptEngine import BaseScriptEngine
+import gradio as gr
+
+
+class CustomScriptEngine(BaseScriptEngine):
+    name = "Custom Script Engine"
+    description = "Generate a script with a custom provided prompt"
+    num_options = 1
+
+    def __init__(self, options: list[list | tuple | str | int | float | bool | None]):
+        self.script = options[0]
+        super().__init__()
+
+    def generate(self, *args, **kwargs) -> str:
+        return self.script
+
+    @classmethod
+    def get_options(cls) -> list:
+        return [
+            gr.Textbox(
+                label="Prompt",
+                placeholder="Enter your prompt here",
+                value="",
+            )
+        ]