Add idle trigger to python REPL

Author: bill88t

base/Beryllium/bin/python.py

@@ -10,6 +10,7 @@
     "rest_a": "common",
     "echo": "common",
     "prefix": ">>> ",
+    "idle": 4,
 }
 term.buf[1] = ""
 
@@ -177,5 +178,10 @@
         term.buf[1] = ""
         pv[get_pid()]["mass"].clear()
         term.focus = 0
+    elif term.buf[0] == 4:
+        term.buf[1] = ""
+        term.focus = 0
+        break
+
 dmtex("Python shell session has ended")
 be.api.setvar("return", "0")