Adding Attributes To Items And Armor, Adding Animation Suport

I Believe That We Should Have The Option To  Add Attributes To Items And Armor, This Allows To Make Glide able Armor For Example Using Gamer Geeks To Generate Commands That Does This (https://www.gamergeeks.net/apps/minecraft/give-command-generator) /give @a netherite_chestplate[glider={}] , This Command Adds The Attribute Glider To A Chest plate, This Allows The Chest plate To Act As An Elytra, This Is What I Have Spent Hours Trying To Find In MCreator And We Don't Have It (/give @a netherite_chestplate[glider={}]) This Is The Command For 1.21.8 And The Command Above Is For 1.21.9+, This Shows That The Tec We Need Exists In The Game, But It Would Be Nice To Have This Built Into The Armor/Item Creator,  As A Second And Less Important Point It Would Be Lovely To Have A Supported And Easy Way To Create Custom Animations For The Player, I Know This Exists In An Addon But I Would Like Something That Stays Up To Date And Works With The Most Recent Versions Of MCreator.