net: TypedArray support on write

[legendecas]

• Version: v0.11.x
• Platform: all
• Subsystem: net

Socket#write doesn't accept TypedArray.

var conn = net.createConnection('foo.sock')
conn.write(new UInt8Array(2)) // TypeError: invalid argument

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[Txiaozhe]

UInt8Array -> Uint8Array

[yorkie]

Removed the label "good first issue" it might be as some jobs that do:

• fix document and source code are inconsistent,
• improve the documents,
• improve the source code by env, include and more.