feat: Add Haskell support

Author: andrewferrier

README.md

@@ -25,6 +25,7 @@ navigation and the ability to output variable values.
 *   `fish`
 *   `fortran`
 *   `go`
+*   `haskell`
 *   `java`
 *   `javascript`
 *   `lean`
@@ -309,7 +310,7 @@ If it helps to understand these, you can look at the built-in configurations in
 | fish                                                                | :+1:              | :+1:                                                               | :x:                                                       | :x:                                                                  | :x:                                                 | :x:                                               | :x:                                                   |
 | Fortran                                                             | :+1:              | :+1:                                                               | :x:                                                       | :x:                                                                  | :+1:                                                | :x:                                               | :x:                                                   |
 | Golang                                                              | :+1:              | :+1:                                                               | :+1:                                                      | :+1:                                                                 | :+1:                                                | :x:                                               | :+1:                                                  |
-| Haskell                                                             | :x:               | :+1:                                                               | :x:                                                       | :x:                                                                  | :x:                                                 | :x:                                               | :x:                                                   |
+| Haskell                                                             | :+1:              | :+1:                                                               | :x:                                                       | :x:                                                                  | :x:                                                 | :x:                                               | :x:                                                   |
 | Java                                                                | :+1:              | :+1:                                                               | :+1:                                                      | :+1:                                                                 | :+1:                                                | :x:                                               | :x:                                                   |
 | Javascript/Typescript                                               | :+1:              | :+1:                                                               | :+1:                                                      | :+1:                                                                 | :+1:                                                | :x:                                               | :+1:                                                  |
 | Kotlin                                                              | :+1:              | :x:                                                                | :x:                                                       | :x:                                                                  | :x:                                                 | :x:                                               | :x:                                                   |

lua/debugprint/filetypes.lua

@@ -85,6 +85,12 @@ return {
         mid_var = '%+v\\n", ',
         right_var = ")",
     },
+    ["haskell"] = {
+        left = 'putStrLn "',
+        right = '"',
+        mid_var = '" ++ ',
+        right_var = "",
+    },
     ["java"] = {
         left = 'System.err.println("',
         right = '");',