Binding expression edition support (no resolution / string only)

[treilhes]

This pull request allow edition of binding expression for string values only.

If the field containing the binding expression is shown in the hierarchy view. It won't be resolved and can't be edited The warning is kept to inform the user about the presence of a binding expression

If the field containing the binding expression is shown in the scene view. It won't be resolved and can't be edited

If the field containing the binding expression is shown in the previex view. It won't be resolved and can't be edited

#89 seems partialy solved, at least for string fields #97 binding expression in fields other than string still generate an exception and prevent moving components

Please, feel free to comment or require modifications on this pull request

[treilhes]

Hello, I wonder if someone can take some time to give it a look

[abhinayagarwal]

Hi @treilhes,

Thank you for the exemplary work in the PR. I am trying to understand the target of the PR. Will binding expression resolution be added as a part of this PR?

[treilhes]

It will add binding expression support only for String typed fields. The pull request allows SceneBuilder to show binding expression in the editor (aka ${something}) without trying to resolve it and generate an exception