Improve the Profile.py $rawprofile Command

[Calebh101]

Instead of using discord.utils.escape_markdown(item['URL']) alone, which doesn't properly escape things like titles, subtitles, and many more - as seen in this example:

I've changed the message logic to use a new function that properly escapes certain effects and prefixes:

msg = '*{}\'s {}{} Profile:*\n\n{}'.format(
	DisplayName.name(member),
	"Raw " if raw else "",
	Nullify.escape_all(item['Name']),
	_format_raw(item['URL']) if raw else item['URL']
)

def _format_raw(contents=""): # Format the contents to properly display all characters without letting Discord format it.
	contents = discord.utils.escape_markdown(item['URL'])
	pattern = re.compile(r"#{1,3}|-#|[->] ")
	number_prefix_pattern = re.compile(r"\d+\. [^\n]+")
	lines = []
	for line in contents.splitlines():
		if number_prefix_pattern.search(line):
			i = line.find(".")
			if i != -1:
				line = line[:i] + "\\" + line[i:] # Escape number lists manually
		elif pattern.search(line):
			line = "\\" + line
		lines.append(line)
	contents = "\n".join(lines)
	return contents

This will format profiles like the following:

This makes it a lot easier to edit heavily-formatted profiles, or transfer profiles across servers, as previously, you would have to use Copy Text and edit out the top line (like Caleb's codeblock Profile:).

_{Note: _format_codeblock is included for the ability to format as a markdown code block, but it doesn't work with nested code blocks.}
I have tested this with my own bot instance, but let me know if you find other issues while the PR is still pending and I can work on it!