Debugger should ask the user to select the arch and platform if he tries to connect or attach with a raw view

[CouleeApps]

Version and Platform (required):

• Binary Ninja Version: 5.3.8940-dev
• OS: macOS (host) Linux (remote)
• OS Version: 14.2 (host) 24.04 (remote)
• CPU Architecture: M2 (host) x86_64 (remote)
• Local or Remote Debugging: remote

Bug Description:
I tried to attach to a gdbserver using an empty binary data view (New Binary Data action) and the debugger was unable to show me any memory of the target. This is likely because I'm using New Binary Data, as this does not replicate when using New Mapped Data. I got an error: [Analysis] Attempting to add function not backed by file: 0x784b95b84490 which I assume is of similar reason.

Steps To Reproduce:

1. Start gdbserver on remote host, I used gdbserver --attach --once stdio <pid>
2. Binja > New
3. Binja > Debugger > Connect to Remote Process
4. Enter remote details
5. Observe debugger attaches and cannot show memory
6. In my case I also was presented Code Insight Map which was entirely unhelpful

Expected Behavior:
I expected to either be able to see the debugged binary's memory or to have an error message telling me to use Mapped Data or something.

Screenshots/Video Recording:

Binary:
No binary, because the whole bug is that I didn't open a binary to begin with

[xusheng6]

FWIW the designed workflow is that you would create a new mapped view and specify the arch and platform: https://docs.binary.ninja/guide/debugger/index.html#debugging-without-opening-a-file

But I admit that this workflow is a bit hard to discover. The user suggested adding to "Open the binary you wish to debug" a line "Or debug without opening a file" with a link to that section. Or I think maybe we can just fail the debugger operations from the very beginning if it is a raw view, and tell people to create a proper mapped view to conitnue

[xusheng6]

So I tested this and apparently the desired workflow is that when you try to do it with a Raw view without an arch and platform, the UI will show a dialog that asks you to specify it. Apparently this does not work when you are connecting to a remote or attaching to a running process. I have updated the issue title to reflect it