[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/utils/chat_formatting.py

@@ -0,0 +1,79 @@
+def error(text):
+    return "\N{NO ENTRY SIGN} {}".format(text)
+
+
+def warning(text):
+    return "\N{WARNING SIGN} {}".format(text)
+
+
+def info(text):
+    return "\N{INFORMATION SOURCE} {}".format(text)
+
+
+def question(text):
+    return "\N{BLACK QUESTION MARK ORNAMENT} {}".format(text)
+
+
+def bold(text):
+    return "**{}**".format(text)
+
+
+def box(text, lang=""):
+    ret = "```{}\n{}\n```".format(lang, text)
+    return ret
+
+
+def inline(text):
+    return "`{}`".format(text)
+
+
+def italics(text):
+    return "*{}*".format(text)
+
+
+def pagify(text, delims=["\n"], *, escape_mass_mentions=True, shorten_by=8,
+           page_length=2000):
+    """DOES NOT RESPECT MARKDOWN BOXES OR INLINE CODE"""
+    in_text = text
+    page_length -= shorten_by
+    while len(in_text) > page_length:
+        this_page_len = page_length
+        if escape_mass_mentions:
+            this_page_len -= (in_text.count("@here", 0, page_length) +
+                              in_text.count("@everyone", 0, page_length))
+        closest_delim = max([in_text.rfind(d, 1, this_page_len)
+                             for d in delims])
+        closest_delim = closest_delim if closest_delim != -1 else this_page_length
+        if escape_mass_mentions:
+            to_send = escape(in_text[:closest_delim], mass_mentions=True)
+        else:
+            to_send = in_text[:closest_delim]
+        if len(to_send.strip()) > 0:
+            yield to_send
+        in_text = in_text[closest_delim:]
+
+    if len(in_text.strip()) > 0:
+        if escape_mass_mentions:
+            yield escape(in_text, mass_mentions=True)
+        else:
+            yield in_text
+
+
+def strikethrough(text):
+    return "~~{}~~".format(text)
+
+
+def underline(text):
+    return "__{}__".format(text)
+
+
+def escape(text, *, mass_mentions=False, formatting=False):
+    if mass_mentions:
+        text = text.replace("@everyone", "@\u200beveryone")
+        text = text.replace("@here", "@\u200bhere")
+    if formatting:
+        text = (text.replace("`", "\\`")
+                    .replace("*", "\\*")
+                    .replace("_", "\\_")
+                    .replace("~", "\\~"))
+    return text