Add initial project structure with Docker support and chapter downloading functionality

- Created .dockerignore and .gitignore files to exclude unnecessary files from Docker builds.
- Added Dockerfile for multi-stage build setup, including dependencies and production environment configuration.
- Introduced docker-compose.yml for service orchestration, including FlareSolverr and the main application.
- Implemented core functionality for downloading manga chapters, including utilities for handling file paths and chapter metadata.
- Added ESLint configuration for code quality and consistency.
- Included JSDoc configuration for documentation generation.
- Established initial package.json and package-lock.json with necessary dependencies for the project.

web/src/main.js

@@ -0,0 +1,9 @@
+import "@picocss/pico/css/pico.min.css";
+import "./app.css";
+import { mount } from "svelte";
+import App from "./App.svelte";
+
+const target = document.getElementById("app");
+if (target) {
+  mount(App, { target });
+}