Update bindings to use LVGL as MicroPython user module

[PGNetHun]

Update bindings to use LVGL as MicroPython user module.

Based on PRs:

• Enable lv_binding_micropython as USER_C_MODULE #341
• Integration as external c module with unmodified micropython. #242

Kudos to @andrewleech and @Carglglz for their work on transforming LVGL-MicroPython binding into user module.

Remaining TODO:

• Fix espidf.c compilation, and so ILI9xxx.py display driver
• Fix Github CI workflows (actions)
• Fix possible build issues of ports (test and help needed)

[PGNetHun]

FYI:
I decided not to wait longer, so community can use LVGL-MicroPython binding with MicroPython v1.24.

Unix, ESP32 and ESP32-S3 builds are working.
All the remaining tasks, ports, and bugs can be fixed continuously after merge.

[Carglglz]

Fix Github CI workflows (actions)

@PGNetHun in my case CI was failing because the lvgl submodule is currently checked out at
7738609d2f5c1148bedefeff7ba9fa318958afd3 lvgl (v9.2.0-431-g7738609d2) which points to my fork:branch (https://github.com/Carglglz/lvgl/tree/lvgl-dev-master), which contains a commit to fix #343, see:

commit 7738609d2f5c1148bedefeff7ba9fa318958afd3 (HEAD -> lvgl-dev-master, myfork/lvgl-dev-master)
Author: Carlosgg <[email protected]>
Date:   Mon Jun 24 02:17:43 2024 +0100

    fix(micropython) lvgl module deinit

    Properly deinit lvgl module so it can be initiated after a soft reset.

diff --git a/src/lv_init.c b/src/lv_init.c
index 18a2e0857..2d1479273 100644
--- a/src/lv_init.c
+++ b/src/lv_init.c
@@ -484,6 +484,14 @@ void lv_deinit(void)
     lv_log_register_print_cb(NULL);
 #endif

+
+#ifdef LV_GC_DEINIT
+    LV_GC_DEINIT();
+#endif
+
+
+    return;
+
 }

 /**********************

So now that these changes are merged, would be appropriate to open a PR in lvgl repo with this commit and then update lvgl submodule here. Then CI should work as expected. 👍🏼

[PGNetHun]

Hello!
I've seen the problems too, and have created (and merged) PRs:

• Update LVGL, and update github workflow #369 -> update LVGL to latest commit
• Fix binding user module cmake file #370 -> fix binding cmake file to avoid RP2 and STM32 CI build fail
• Update LVGL binding lv_micropython#94 -> update binding with all changes above

I have also a separate PR for LVGL repo, that should fix the MicroPython CI build in LVGL repo:
lvgl/lvgl#7945