Create MessageSendAction

[levidhuyvetter]

Created an action for MessageSend command. Copied from OriginateAction.php and adjusted according to definition below from asterisk:

[Syntax]
Action: MessageSend
[ActionID:] <value>
To: <value>
[From:] <value>
[Body:] <value>
[Base64Body:] <value>
[Variable:] <value>

[Synopsis]
Send an out of call message to an endpoint. 

[Description]
Not available

[Arguments]
ActionID
    ActionID for this transaction. Will be returned.
To
    The URI the message is to be sent to.
        Technology: PJSIP
        Specifying a prefix of 'pjsip:' will send the message as a SIP MESSAGE
        request.
        Technology: SIP
        Specifying a prefix of 'sip:' will send the message as a SIP MESSAGE
        request.
        Technology: XMPP
        Specifying a prefix of 'xmpp:' will send the message as an XMPP chat
        message.
From
    A From URI for the message if needed for the message technology being used
    to send this message.
        Technology: PJSIP
        The 'from' parameter can be a configured endpoint or in the form of
        "display-name" <URI>.
        Technology: SIP
        The 'from' parameter can be a configured peer name or in the form of
        "display-name" <URI>.
        Technology: XMPP
        Specifying a prefix of 'xmpp:' will specify the account defined in
        'xmpp.conf' to send the message from. Note that this field is required
        for XMPP messages.
Body
    The message body text.  This must not contain any newlines as that
    conflicts with the AMI protocol.
Base64Body
    Text bodies requiring the use of newlines have to be base64 encoded in this
    field.  Base64Body will be decoded before being sent out. Base64Body takes
    precedence over Body.
Variable
    Message variable to set, multiple Variable: headers are allowed.  The
    header value is a comma separated list of name=value pairs.

[See Also]
Not available

[Privilege]
message,all

[List Responses]
None

[Final Response]
None

[coveralls]

Coverage increased (+0.05%) to 92.244% when pulling aa0da45 on levidhuyvetter:patch-1 into db4b227 on marcelog:master.