feat: shorthand to concatonate arguments

in the shell this allows for `tylc 1 + 1`,
making it equivelent to `tylc "1+1"`

this makes implementing other arguments difficult/impossible, though

src/main.rs

@@ -13,7 +13,7 @@ pub fn parse_and_calc(s: &str) -> Float {
 }
 
 fn main() {
-    let input = match env::args().nth(1) {
+    let input = match env::args().skip(1).reduce(|x, a| a + &x) {
         Some(s) => s,
         None => {
             let mut buf = String::new();