Show error dialog when MS crashes

[thomas-senechal]

Context
ATM, when Massa Station crashes, the user has nothing to know it. The only errors are in the logs, which are not easy to access and read for most users.

Opening a window showing the error when MS crashes would help users to know that MS crashed and what is the error so they can do some researches.

User flow

• Massa Station crashes
• User is prompted with a dialog showing the error message

How to

• When MS crashes (should be represented as a Fatal in the logger), display a dialog with the error message

Technical details

QA testing

[thomas-senechal]

I did some tries, here is what I found:

• We can create a callback in the logger that will be called when Fatal is called. https://github.com/massalabs/station/blob/main/pkg/logger/global.go
  This would allow us to get back the error message
• Fyne (the GUI we are using) requires to be in the main thread to open a new Window/App, which makes it impossible to open a new window/dialog from a routine
• During a Fatal, MS closes before the dialog opens

[Thykof]

maybe another solution would be to create another binary that we will execute in another process in the fatal callback?

[thomas-senechal]

maybe another solution would be to create another binary that we will execute in another process in the fatal callback?

I thought about this solution, the issue is that we will need to build one for each platform, ship it, store it somewhere... So I feel like it's not the right thing to do