Improve and unify the user scripts

[Guzz-T]

This pull request contains improvements for user scripts. These include:

• More shared code
• Keyboard control and improvement of the display of watch scripts
• Partial pytest for scripts
• Reusable fake objects (move code into separate files)
• Added watch-cfi and dump-cfi commands to CLI

relates to #221

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
luxtronik
__main__.py	25	25	0%	3–66
data_vector.py	115	1	99%	42
datatypes.py	399	2	99%	57, 127
discover.py	58	1	98%	63
luxtronik/cfi
interface.py	149	13	91%	79–92, 241–242, 247
parameters.py	31	1	97%	49
luxtronik/scripts
__init__.py	35	5	86%	7–16, 51
discover_shi.py	60	60	0%	8–98
dump_cfi.py	14	6	57%	18–25, 29
dump_shi.py	15	6	60%	21–28, 32
performance_shi.py	63	63	0%	7–89
update_screen.py	105	82	22%	6, 20–41, 46–48, 51–61, 64, 70–75, 78, 81–85, 88–92, 95–97, 100–103, 106–111, 115–116, 119–126, 129–136
watch_cfi.py	32	16	50%	36–47, 50–56, 60
watch_shi.py	33	16	52%	38–49, 52–58, 62
luxtronik/shi
contiguous.py	136	2	99%	265–266
TOTAL	2399	299	88%

Tests	Skipped	Failures	Errors	Time
380	0 💤	0 ❌	0 🔥	29.828s ⏱️

[kbabioch]

Should this file / script be renamed (dump_cfi.py) to stay consistent with the dump_shi.py one?

[Guzz-T]

Done