Bind collection to file

[RVShershnev]

Bind collection to file.

Open collection from file 1.pororoca.json.
Then change collection.
Then Save or Save as collection.
Save: save collection to 1.pororoca.json.
Save as: open save dialog...

[alexandrehtrb]

This is possible to be done.

But it will require a new Pororoca collection extension, like .pcj, because Windows considers extension only the final ".ext" of the file name and the current Pororoca collection extension is .pororoca_collection.json, which is considered only as a JSON file.

I will leave this issue open to consider it in the future.