feat: improved react snippets massively and fixed "Compoment" typos

[monoira]

based on my old proposal

#523

changes

• removed all "import React from 'React'" snippets. since react 17, importing react like that is no longer needed.
• changed all "import React, { someComponent }" to "import { some Component }" for same reason as above.

examples of type of changes that happened

// from
"import React from 'react'",
// to - deletion of it

// from
"import React from 'react'",
"",
// to - deletion of it

// from
"import React, { Component } from 'react'",
// to
"import { Component } from 'react'",

• fixed all "Compoment" typos with "Component" in javascript/ directory.

replaced with bunch of not formatted spaces because repo owner has different formatting rules it seems. Whenever I formatted, everything would get formatted because of that so I'm committing it non-formatted.