Support translation bindings in qmltc

qmltc must be able to correctly handle translation bindings such as:

Text { text: qsTr("hello") } // should be translated in German to "hallo" (?)

There are several ways on how to create translation bindings. The interesting functions are part of the Qt QML. The exhaustive list should be:

• string qsTr(string sourceText, string disambiguation, int n)
• string qsTrId(string id, int n)
• string qsTrIdNoOp(string id)
• string qsTrNoOp(string sourceText, string disambiguation)
• string qsTranslate(string context, string sourceText, string disambiguation, int n)
• string qsTranslateNoOp(string context, string sourceText, string disambiguation)

At the code level, qmltc should be able to compile QQmlJSMetaPropertyBinding (coming from QQmlJSScope) into something meaningful when the binding type is one of

.