feat: Add license and attribution routes, update templates and documentation

- Added a new license route to serve the LGPL license text.
- Introduced a new attribution page to acknowledge third-party software used in the project.
- Updated the base HTML template to include a link to the attribution page.
- Included the license router in the main application router.
- Added the license text file for LGPL to the static licenses directory.
- Updated the NOTICE file to include detailed attributions for third-party libraries.
- Added a new requirements-dev.txt for license compliance checking.
- Updated the requirements.txt to clarify the LGPL license for Paramiko.

Dockerfile

@@ -20,6 +20,8 @@ COPY --from=builder /usr/local/bin /usr/local/bin
 COPY ./app /app/app
 COPY ./VERSION /app/VERSION
 COPY ./frontend /app/frontend
+COPY ./BUILD_DATE /app/BUILD_DATE
+COPY ./LICENSE /app/LICENSE
 
 # Create runtime_info directory
 RUN mkdir -p /app/runtime_info