Use nbgl shared functions

[nroggeman-ledger]

Description

The goal of this PR is to reduce the size in Flash (and RAM) of Applications, by sharing all low-level functions of NBGL with the OS:

• Object management
• Touchscreen management
• Screens management

The architecture/Design document can be found in https://ledgerhq.atlassian.net/wiki/spaces/FW/pages/4750966807/BOLOS+Apps+-+Arch+-+NBGL+sharing+between+FW+and+Apps

Changes include

• Bugfix (non-breaking change that solves an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)
• Tests
• Documentation
• Other (for changes that might not fit in any category)

Breaking changes

For apps non using standard makefiles, there may be some risks if NBGL low-level files are compiled.
Speculos won't work. Use API LEVEL 22

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 9.09091% with 10 lines in your changes missing coverage. Please review.

Project coverage is 35.49%. Comparing base (0aad933) to head (1cf37a5).

Files with missing lines	Patch %	Lines
lib_nbgl/src/nbgl_obj.c	10.00%	9 Missing ⚠️
lib_nbgl/src/nbgl_screen.c	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #768      +/-   ##
==========================================
- Coverage   35.76%   35.49%   -0.28%     
==========================================
  Files          13       13              
  Lines        1591     1606      +15     
==========================================
+ Hits          569      570       +1     
- Misses       1022     1036      +14     

Flag	Coverage Δ
unittests	35.49% <9.09%> (-0.28%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.