Add ability to import tags from Aseprite as non-looping

[AristurtleDev]

Description

In the previous version of MonoGame.Aseprite it was possible to add the text [oneshot] to a tag in Aseprite, and then when it was imported, it was imported as a non-looping animation.

This was not carried over with the Version 4.0.0 update and should be re-implemented.

Steps to Reproduce

1. Create an Aseprite file with multiple frames
2. Create a Tag named anything as long as it has [oneshot] at the end of the name. (e.g. open_door[oneshot]
3. Import the Asperite file in game using AsepriteFile.Load()
4. Create a SpriteSheet with the SpriteSheetProcessor
5. Create an AnimatedSprite based on the open_door tag
6. Update the AnimatedSprite in the Update method and draw it in the Draw method
7. Run the game

Expected Behavior

Since the tag has [oneshot] at the end of the name, it's expected it to not loop in line with the previous version of the library.

Actual Behavior

The animation continues to loop

Configuration

• .NET Version: net6.0
• MonoGame Version: 3.8.1
• Aseprite Version: 1.3-beta21
• Operating System: Mac OS Monterey 12.6.1
• *Architecture: x64

Other Information

No other information to provide.

[AristurtleDev]

Reference issue #20

[AristurtleDev]

Aseprite 1.3-rc1 now has the "repeat" field for tags. This will be implemented as part of #69 .

[AristurtleDev]

As of version 5.0.0, AnimatedSprite.Play has been added which has a loop count override.
Further, Asperite 1.3-rc1 added new Repeat tag which can be used to set the tag as non looping.