Use bitmap fonts instead of sprite fonts; fix most line wrapping and text alignment

[ethanmoffat]

A side-effect of this change is that packages are now downloaded to $(SourceRoot)/packages instead of your global nuget package cache. This is required so that MonoGame.Extended.Content.Pipeline can be referenced reliably.

Major fixes included:

• Text splitting should now be 1:1 accurate with the original client. This was validated using Sordie's text macros in speech bubbles.
• News/chat panels now split text the same way that the original client does.
• Many dialogs are now updated to have more accurate text alignments and splitting.
• Updating of character/NPC animators now happens before map update so there isn't a weird single walk frame offset in certain places (ground/base layers, effect renderers)

Minor fixes included:

• TimedSpikes only plays when you're close enough instead of being map-wide (emulating vanilla client)
• Locked Door/Chest plays a sound effect when you try to open it
• You can go through a door opened by another player, even if you don't have the key (emulating vanilla client)

Fixes #168