aider: Add typing simulation to get_input function.

# Context:
USER: in this case, have it still print the "> " followed by the inputted line. but write and flush one character at a time, with small random delays in between so it looks like typing
ASSISTANT: To achieve this, you can use the `time` module to introduce small random delays and print the characters one by one. Here's the change you need to make in the `get_input` function:

```python
aider/getinput.py
<<<<<<< ORIGINAL
import sys

def get_input(history_file, fnames):
    if not sys.stdin.isatty():
        return input()
=======
import sys
import time
import random

def get_input(history_file, fnames):
    if not sys.stdin.isatty():
        input_line = input()
        print("> ", end="")
        for char in input_line:
            print(char, end="", flush=True)
            time.sleep(random.uniform(0.05, 0.2))
        print()
        return input_line
>>>>>>> UPDATED
```

This change imports the `time` and `random` modules. When the input is coming from a file, it reads the input line, prints the "> " prompt, and then prints each character in the input line with a small random delay between 0.05 and 0.2 seconds, simulating typing.

aider/getinput.py

@@ -26,10 +26,18 @@ class FileContentCompleter(Completer):
 
 
 import sys
+import time
+import random
 
 def get_input(history_file, fnames):
     if not sys.stdin.isatty():
-        return input()
+        input_line = input()
+        print("> ", end="")
+        for char in input_line:
+            print(char, end="", flush=True)
+            time.sleep(random.uniform(0.05, 0.2))
+        print()
+        return input_line
     inp = ""
     multiline_input = False