FileService - Hedera

RPC	Request	Response	Comments
`createFile`	Transaction	TransactionResponse	Creates a file
`updateFile`	Transaction	TransactionResponse	Updates a file
`deleteFile`	Transaction	TransactionResponse	Deletes a file
`appendContent`	Transaction	TransactionResponse	Appends the file
`getFileContent`	Query	Response	Retrieves the file content
`getFileInfo`	Query	Response	Retrieves the file information
`systemDelete`	Transaction	TransactionResponse	Deletes a file if the submitting account has network admin privileges
`systemUndelete`	Transaction	TransactionResponse	Undeletes a file if the submitting account has network admin privileges