feat: allow configure diode producer_app_name prefix

[leoparente]

also fix issues:

• device-discovery: not integer port number
• device-discovery: not applying resolved api_key env variable

[linear]

OBS-596 [orb-discovery] Add producer_app_name prefix on discovery backends

Allow through command line to add prefix producer_app_name

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
device_discovery
discovery.py	35	2	94%	91–94
main.py	32	2	94%	90, 96
server.py	68	4	94%	33–35, 128, 131
version.py	7	1	86%	14
device_discovery/policy
manager.py	41	2	95%	36–37
runner.py	64	1	98%	49
TOTAL	358	12	97%

Tests	Skipped	Failures	Errors	Time
49	0 💤	0 ❌	0 🔥	3.304s ⏱️

[github-actions]

Go test coverage

STATUS	ELAPSED	PACKAGE	COVER	PASS	FAIL	SKIP
🟢 PASS	1.02s	github.com/netboxlabs/orb-discovery/network-discovery/config	100.0%	8	0	0
🟢 PASS	4.14s	github.com/netboxlabs/orb-discovery/network-discovery/policy	84.2%	10	0	0
🟢 PASS	1.04s	github.com/netboxlabs/orb-discovery/network-discovery/server	85.5%	8	0	0
🟢 PASS	1.01s	github.com/netboxlabs/orb-discovery/network-discovery/version	100.0%	1	0	0

Total coverage: 86.3%

[mfiedorowicz]

🚀

[github-actions]

🎉 This PR is included in version 0.3.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version 0.3.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀