Implement input configuration loading from i32

src/input.zig

@@ -21,8 +21,21 @@ pub const Input = struct {
 };
 
 pub fn loadConfig() void {
-    for (comptime getInputNames()) |name| {
+    var iter = config.getConfigIterator("input.ini") catch {
-        std.debug.print("{s}\n", .{name});
+        std.debug.print("Error loading input config, using defaults...\n", .{});
+        return;
+    };
+
+    while (iter.next()) |option| {
+        inline for (comptime getInputNames()) |name| {
+            if (std.mem.eql(u8, option.key, name)) {
+                if (std.fmt.parseInt(i32, option.value, 10) catch null) |value| {
+                    @field(Self, name).code = value;
+                } else {
+                    std.debug.print("Invalid input value '{s}' in config, ignoring.", .{option.value});
+                }
+            }
+        }
     }
 }