Continue cleanup work

[bellegarde-c]

2a7bde6826a8a755c1f6adc6df2a43b9d8374420 mm_modem_simple: Use ModemManagerState and ModemManagerAccessTechnology
ee2132eb559653b765c8378fd2564bc97963dcdf mm_types: Add ModemManagerPortType
f7ac4e54ab1ea888d42e565223b4267249499b58 mm_modem: Move common types to own file

There is something strange in this commits:

In ee2132e, MM_MODEM_PORT_TYPE_AT value was wrong, 2 instead of 3: https://github.com/linux-mobile-broadband/ModemManager/blob/main/include/ModemManager-enums.h#L669

In 2a7bde6, all modem state values were wrong:

• Enabled is 6, not 7
• Searching is 7 not 8
• Registered is 8, not 9

I'm testing this for some days, for now it works...

[g7]

Changes look fine to me, and long overdue, thanks! Unsure why the values where wrong in the first place, but I'm not an expert in ofono2mm in general...

I think we can either merge this straight away or at least injecting it in droidian-release so that we can have some wider testing in 101, what do you think?

[bellegarde-c]

Using this on my main phone since 1 month, works OK so yes, looks safe to push it to droidian-release.

[g7]

I think we can merge this, what do you think?

[bellegarde-c]

Yes, works great for me.

[g7]

Great, merging, thanks!