Double catch block in services

[cincuranet]

Most services implementation has the catch (Exception ex) { throw FbException.Create(ex); } block, but same block is already in StartTask[Async]. Hence it could be probably removed.

[cincuranet]

Now I'm wondering whether I meant to remove the catch block from FbService or from the implementations. 😂

[cincuranet]

Because of ProcessServiceOutput usage in some services, I think I mean to remove it from StartTask[Async] and have just the outer. Same for Open|Close[Async].

Also I think the outer blocks need to be modified into two try blocks, so the "finally-Close" call is handled.