[V3 Everything] Package bot and write setup scripts (#964)

Ya'll are gonna hate me.

* Initial modifications

* Add initial setup.py

* working setup py help

* Modify setup file to package stuff

* Move a bunch of shit and fix imports

* Fix or skip tests

* Must add init files for find_packages to work

* Move main to scripts folder and rename

* Add shebangs

* Copy over translation files

* WORKING PIP INSTALL

* add dependency information

* Hardcoded version for now, will need to figure out a better way to do this

* OKAY ITS FINALLY FUCKING WORKING

* Add this guy

* Fix stuff

* Change readme to rst

* Remove double sentry opt in

* Oopsie

* Fix this thing

* Aaaand fix test

* Aaaand fix test

* Fix core cog importing and default cog install path

* Adjust readme

* change instance name from optional to required

* Ayyy let's do more dependency injection

redbot/core/cli.py

@@ -0,0 +1,115 @@
+import argparse
+import asyncio
+
+from redbot.core.bot import Red
+
+
+def confirm(m=""):
+    return input(m).lower().strip() in ("y", "yes")
+
+
+def interactive_config(red, token_set, prefix_set):
+    loop = asyncio.get_event_loop()
+    token = ""
+
+    print("Red - Discord Bot | Configuration process\n")
+
+    if not token_set:
+        print("Please enter a valid token:")
+        while not token:
+            token = input("> ")
+            if not len(token) >= 50:
+                print("That doesn't look like a valid token.")
+                token = ""
+            if token:
+                loop.run_until_complete(red.db.token.set(token))
+
+    if not prefix_set:
+        prefix = ""
+        print("\nPick a prefix. A prefix is what you type before a "
+              "command. Example:\n"
+              "!help\n^ The exclamation mark is the prefix in this case.\n"
+              "Can be multiple characters. You will be able to change it "
+              "later and add more of them.\nChoose your prefix:\n")
+        while not prefix:
+            prefix = input("Prefix> ")
+            if len(prefix) > 10:
+                print("Your prefix seems overly long. Are you sure it "
+                      "is correct? (y/n)")
+                if not confirm("> "):
+                    prefix = ""
+            if prefix:
+                loop.run_until_complete(red.db.prefix.set([prefix]))
+
+    ask_sentry(red)
+
+    return token
+
+
+def ask_sentry(red: Red):
+    loop = asyncio.get_event_loop()
+    print("\nThank you for installing Red V3 alpha! The current version\n"
+          " is not suited for production use and is aimed at testing\n"
+          " the current and upcoming featureset, that's why we will\n"
+          " also collect the fatal error logs to help us fix any new\n"
+          " found issues in a timely manner. If you wish to opt in\n"
+          " the process please type \"yes\":\n")
+    if not confirm("> "):
+        loop.run_until_complete(red.db.enable_sentry.set(False))
+    else:
+        loop.run_until_complete(red.db.enable_sentry.set(True))
+        print("\nThank you for helping us with the development process!")
+
+
+def parse_cli_flags(args):
+    parser = argparse.ArgumentParser(description="Red - Discord Bot")
+    parser.add_argument("--owner", type=int,
+                        help="ID of the owner. Only who hosts "
+                             "Red should be owner, this has "
+                             "serious security implications.")
+    parser.add_argument("--co-owner", type=int, action="append", default=[],
+                        help="ID of a co-owner. Only people who have access "
+                             "to the system that is hosting Red should be  "
+                             "co-owners, as this gives them complete access "
+                             "to the system's data. This has serious "
+                             "security implications if misused. Can be "
+                             "multiple.")
+    parser.add_argument("--prefix", "-p", action="append",
+                        help="Global prefix. Can be multiple")
+    parser.add_argument("--no-prompt",
+                        action="store_true",
+                        help="Disables console inputs. Features requiring "
+                             "console interaction could be disabled as a "
+                             "result")
+    parser.add_argument("--no-cogs",
+                        action="store_true",
+                        help="Starts Red with no cogs loaded, only core")
+    parser.add_argument("--self-bot",
+                        action='store_true',
+                        help="Specifies if Red should log in as selfbot")
+    parser.add_argument("--not-bot",
+                        action='store_true',
+                        help="Specifies if the token used belongs to a bot "
+                             "account.")
+    parser.add_argument("--dry-run",
+                        action="store_true",
+                        help="Makes Red quit with code 0 just before the "
+                             "login. This is useful for testing the boot "
+                             "process.")
+    parser.add_argument("--debug",
+                        action="store_true",
+                        help="Sets the loggers level as debug")
+    parser.add_argument("--dev",
+                        action="store_true",
+                        help="Enables developer mode")
+    parser.add_argument("instance_name",
+                        help="Name of the bot instance created during `redbot-setup`.")
+
+    args = parser.parse_args(args)
+
+    if args.prefix:
+        args.prefix = sorted(args.prefix, reverse=True)
+    else:
+        args.prefix = []
+
+    return args