Move replit startup commands to their own script

The .replit file gets autofilled with a ton of garbage when Whoogle is
imported, including a required "entrypoint" field that defaults to
"main.py" (even though the run and onBoot fields were already included
and should negate the need to specify an entrypoint, but whatever).
I'm not going to restructure Whoogle to fit what Replit wants, so I've
moved the startup commands to their own script (misc/replit.py) and
updated the "entrypoint" field in .replit.

.replit

@@ -1,3 +1 @@
-language = "bash"
+entrypoint = "misc/replit.py"
-run = ["killall", "-q", "python3", ">", "/dev/null", "2>&1;", "pip", "install", "-r", "requirements.txt", "&&", "./run"]
-onBoot = ["killall", "-q", "python3", ">", "/dev/null", "2>&1;", "pip", "install", "-r", "requirements.txt", "&&", "./run"]

misc/replit.py

@@ -0,0 +1,5 @@
+import subprocess
+
+# A plague upon Replit and all who have built it
+replit_cmd = "killall -q python3 > /dev/null 2>&1; pip install -r requirements.txt && ./run"
+subprocess.run(replit_cmd, shell=True)