feat: Add zip parser

ref: Parsers now returns vector, not a single book

src/application/parsers/rs.rs

@@ -2,7 +2,7 @@ use crate::domain::author::Author;
 use crate::domain::book::Book;
 use std::path::PathBuf;
 
-pub fn parse(path: &PathBuf) -> Result<Book, String> {
+pub fn parse(path: &PathBuf) -> Result<Vec<Book>, String> {
     let mut book = Book::new();
 
     book.title = path.to_string_lossy().to_string();
@@ -11,5 +11,5 @@ pub fn parse(path: &PathBuf) -> Result<Book, String> {
     author.first_name = path.extension().unwrap().to_string_lossy().to_string();
     book.author.push(author);
 
-    return Ok(book);
+    return Ok(vec![ book]);
 }