Max: updated implementation of save_scene + small QOL improvements to host

[Sponge96]

Changelog Description

• Removed has_unsaved_changes from Max host as it looks to have been unused and unimplemented.
• Added and implemented workfile_has_unsaved_changes to Max host.
• Mirrored the Houdini host to implement the above into save_scene publish for Max.
• Added a line to startup.ms which opens the usual 'default' menu inside of Max (see screenshots).

Current (Likely opens this menu due to one or more of the startup scripts used to insert OP menu):

New:

Additional info

It's my understanding that the has_unsaved_changes is now legacy so I have replaced and implemented it using workfile_has_unsaved_changes.

The change to the startup.ms is really just QOL for artists as the view it currently defaults to is not useful nor is it the usual default.

Testing notes:

1. Start 3dsmax
2. Check that on the right hand side it has defaulted to the 'create' view/menu/mode
3. Open the 'Publish/Create' OpenPype Menu
4. Create new 'workfile' publish
5. Publish
6. Check the log of save_scene is NOT saving if no changes to scene were made; or is saving when changes have been made (it should display INFO or DEBUG information in either case).

[moonyuet]

Thank you!
I have tested in my side and the workfile dialog can get the unsaved change when I adjust the scene without saving.
I publish the scene with workfileAsset and it publishes successfully without bug.
Only thing I encounter an error is when I launch 3dsmax with startup.ms, I already make comment on the maxscript(It is mainly because the comment isn't commented correctly)

[moonyuet]

Looks good for me, Thank you!

[LiborBatek]

Seems working fine...

The UI switched correctly to the Create tab and publishing working fine too.

My only concern being, it always says "No unsaved changes, skipping file save..."

I simply couldnt force to perform Save action if any changes made to the active work file...

@moonyuet anything to add to it? maybe my expectations being wrong.

[moonyuet]

Seems working fine...

The UI switched correctly to the Create tab and publishing working fine too.

My only concern being, it always says "No unsaved changes, skipping file save..."

I simply couldnt force to perform Save action if any changes made to the active work file...

@moonyuet anything to add to it? maybe my expectations being wrong.

maybe we can error out the collector if there is unsaved change (similar to what we did in maya). Otherwise no debug message.

[Sponge96]

Seems working fine...
The UI switched correctly to the Create tab and publishing working fine too.
My only concern being, it always says "No unsaved changes, skipping file save..."
I simply couldnt force to perform Save action if any changes made to the active work file...

@moonyuet anything to add to it? maybe my expectations being wrong.

maybe we can error out the collector if there is unsaved change (similar to what we did in maya). Otherwise no debug message.

It should be printing INFO already, just tested again to be sure it's working as intended and all good on my end? I mirrored the logic that Houdini implementation currently uses, so if we do decide to tweak probably good to also do that.