feat: Implement multiple prompts feature for enhanced content generation

Added multiple prompts feature, enabling users to generate content iteratively or split the output for focused parts.
By default, multiple prompts are enabled, allowing users to engage in detailed, step-by-step content creation. This feature can be toggled off through the storycraftr.json configuration.
Improved system to handle backup files (*.back) for preserving versions after edits, ensuring no data loss.
Added support for storycraftr reload-files command to re-sync agent files after manual edits or deletions, ensuring the retrieval system is always up-to-date.

CHANGELOG.md

@@ -9,7 +9,6 @@
 - **Define Command Extensions**: Added new commands under the `define` group to generate key sections for papers, including defining research questions and contributions.
 - **Contribution Generation**: Added the `define_contribution` command to generate or refine the main contribution of a paper, supporting improved clarity and focus for academic projects.
 
-
 ## [0.7.0-alpha3] - 2024-03-14
 
 ### Added

README.md

@@ -105,7 +105,7 @@ The **StoryCraftr Chat** feature allows users to engage directly with an AI assi
 
 - **Chapters**: Write new chapters or adjust existing ones and generate cover text.  
   Example:
-  
+
   ```bash
   !chapters chapter 1 "Write chapter 1 based on the synopsis."
   ```