vrcx 0.2.0-dev: BMC + SDS parallel collector

Initial commit of vrcx (Vegman Remote Collect, extended) — the BMC-only
bmccollect renamed and extended with a parallel SDS-host log branch.

- dev/prod/old repo layout
- per-host bmc/ + os/ subdirs, archives/dump_<ip>.tar.gz, outer session tarball
- SdsSession (paramiko, sudo via -S), OS_COMMAND_TABLE (lsiget, storcli, smartctl, journal, dmidecode, etc.)
- SDS IP discovery via Redfish EthernetInterfaces -> /24 ping-sweep -> arp -a
- UI shows BMC|OS dual progress per host
- CI/pyinstaller paths updated for dev/

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Security vulnerability
+    url: https://github.com/Engelgardt23/bmccollect/security/advisories/new
+    about: Please report security issues privately via GitHub Security Advisories — not as a public issue.