Do you want to make an axe that you can eat?
Lol.
Ok.
"eat animation with like steak." This is difficult. Probably you can do it using skript mirror. But anyway, it's easier to do using JAVA.
But also I can be wrong

You can make an axe that you can eat using:

Code (Skript):

1. on rightclick:
2.     if player is holding a diamond axe named "EAT ME":
3.         play ENTITY GENERIC EAT at player with pitch 1
4.         add 2 to the player's food level
5.         remove 1 diamond axe named "EAT ME" from player
6.  

I did not test it.

 

As I know, you can add custom texture using mcpatcher
Something like that:
NamedResourcePack/assets/minecraft/mcpatcher/cit \\This is the location for all files and textures used by CIT

eat_axe.properties \\This is the file name and type, editable through notepad (Though I use Notepad++))

type=item
matchItems=cooked_beef
texture=example.png
nbt.display.Name=iregex:eat me
Then you have to rename cooked beef to "eat me" in the anvil and it will change its texture to example.png.
Such way you can add edible diamond axe with "eat animation with like steak".

May be it will be useful for you.
Also you can ask your question there:
https://www.spigotmc.org/forums/spigot-plugin-development.52/
Yes, its,probably, wrong section, but there is higher probability that you will find the answer

 

Yes.
But anyway I recommend to ask this question on spigot.

 

I think you want to make the player eat the ax as if eating food, it's an animation. I also have the same problem, can someone help, may be use skript-mirror ?

 

If the code what Flajakay sent is not working, then I think it's not possible in Skript (with animation). Search for plugins. Another way is modify the minecraft client but that's more difficult than doing the animation with skript
Maybe changing a food's texture