Add the flaky last_tilde plugin

This commit adds the aftermentioned to be flaky last_tilde_answer
command and the lte alias.

plugins/lasttilde.py

@@ -0,0 +1,29 @@
+#!/usr/bin/python3
+
+import pinhook.plugin
+import util.tilde
+import inspect
+
+def err(msg): return pinhook.plugin.message(msg)
+
+@pinhook.plugin.command('&lte', help_text='Alias -- &last_tilde_answer')
+@pinhook.plugin.command('&last_tilde_answer', help_text='See the last_tilde\'s answer', ops=False, ops_msg='This command is admin-only as it\'s flaky, and a bit broken.')
+def last_tilde(msg):
+    nick = msg.nick
+    pnick = msg.nick
+    if nick not in msg.ops:
+        retmsg = None
+        if not msg.arg: return err("This command is a bit flaky, if you accept that run this command again with a parameter called flaky, so run `&last_tilde flaky`")
+        if msg.arg and msg.arg != 'flaky': return err("This command maybe won't return what you expect, if you want to run it anyways pass a argument called `flaky`")
+    elif msg.arg: nick = msg.arg.split(' ')[0]
+    answer = None
+    try: data = util.tilde.old_challenges[nick][0]
+    except KeyError: return err("User hasn't played &tilde from the last boot.")
+    if callable(data):
+         data = inspect.getclosurevars(data).nonlocals
+         if len(data) == 0:
+             data = inspect.getsource(data)
+    if answer is None:
+        data = str(data)
+        answer = f"{pnick}'s last tilde's answer was supposed to be `{data}`."
+    return pinhook.plugin.message(answer)