General update and feature addition

[liz3]

This PR does quit a lot so il try to list everything i did over the last two days.

• Updated react and react script dependencies
• Updated all Components to work with react 16.
• Fixed the issue that prevented content reset when exiting Webhook mode
• Implemented others pull request changes, namely (Update discordpy.js #46 , Update Discord.Net inline field snippet #41, Add MessageEmbed code generation for Discord.js #44)
• Changed behaviour when exiting webhook mode.
• Implemented Invite rendering
• Added a general way to support Webhook mode in code generation
• Added Webhook support (Code generation) for: Discord.net, discord.py, jda, and discordjs(v12 version)
• In Webhook mode color picker now updates ALL embeds
• Added husky for precommit formatting
• added npm lock file

Note: I have deployed my version to: https://liz3.github.io/embed-visualizer/, should this PR be rejected i will keep it there online.

Liz3

[Andre601]

Would like to mention, that JDA does NOT have direct webhook support. JDA itself only supports retrieval of Webhooks and their content, but not sending them (At least last time I checked it was that case)

Instead, most if not all webhook handling was moved to a separate library currated by MinnDevelopment which is simply called "Discord Webhooks" (Link)
So maybe correct this, if you're still supporting this PR that is...

[liz3]

Ig this wont ever be merged