Extend the CLI to be able to read and write single values from and to the heatpump

[Guzz-T]

This extension is intended to provide users with a lightweight way to read and write values directly via the CLI.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
luxtronik
__main__.py	27	27	0%	3–76
datatypes.py	450	1	99%	147
discover.py	58	1	98%	63
luxtronik/cfi
interface.py	219	35	84%	140, 173–174, 225–226, 228–229, 231–232, 296–329, 353
luxtronik/definitions
__init__.py	208	1	99%	216
luxtronik/scripts
__init__.py	41	10	76%	7–17, 20–24, 59
debug_cfi.py	46	46	0%	7–71
debug_shi.py	39	39	0%	7–63
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
interface.py	337	3	99%	438, 519, 527
TOTAL	2569	412	84%

Tests	Skipped	Failures	Errors	Time
378	0 💤	0 ❌	0 🔥	19.377s ⏱️