Clickable character (New Feature)

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Description

Make character portraits on stage to be interactable (clickable).

What is the current behavior?

There's no easy way to achieve clickable character in Fungus currently as Fungus character portrait system mostly handled on runtime.

What is the new behavior?

User can choose the behavior of their character by assigning block to be executed when click occurs on character portraits. This will give them freedom and space to be more creative with their character.

https://user-images.githubusercontent.com/64100867/121684114-79d29780-cae8-11eb-8a03-f652665f929e.mp4

New command to toggle the state of clickable character

Important Notes

• My change require modifcations or additions to documentation
• My change modifies the workflow/editing of flowcharts/blocks/commands etc.
• My change modifies the runtime execution/behaviour of existing Fungus Features. e.g., Say, Menus, Portraits, etc.

Other information

Tested this on my current project and worked wonders (for my use cases) but needs more further testing. Let me know if you find any bugs so I can fix it. Thanks!

Sorry had to opening/closing same PRs due to lates windows update nuked my git entirely. Had to clean reinstalled and walah!

Edit: Added screenshot for clickable character command Edit2: Added new screenshot. Character inspector now can get a list of connected blocks via custom editor

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I thought using EventTrigger rather than manually getting Raycast hit would be much cheaper and much more cleaner

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Added dedicated command to toggle on/off the clickable state.

All is done, let me know if there's any other things that you want to be added, and please test it on your end if you can. Thanks!

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I should mention that the goal of this pr is to have more control over a character, like in Renp'y..