(experimental) Add components: support for vSIM

[kaelemc]

Some of us who work with SR OS a lot got addicted a bit to the components:, however this is currently SR-SIM only which is only 25.7 onwards.

While some of the older versions of SR OS are within support, we sometimes need to use them in clab, thus meaning we have to use the vSIM which brings the fun of building the TiMOS line.

Instead we can parse components: and let clab try to build it for us and make life easy.

Few things are wonky since vSIMs are VMs, decided to put the max_nics, cpu and ram parameters as env vars under the slot.

[hellt]

@kaelemc @FloSch62 is this good to go?

[kaelemc]

Almost. will request your review when ready.

[sacckth]

do we have a death wish?

[kaelemc]

do we have a death wish?

Yes, unless you can get me the 24.10.R1 srsim :)

[kaelemc]

Seems to work well enough for me.

[hellt]

probably needs a doc addition

[codecov]

Codecov Report

❌ Patch coverage is 91.95402% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.91%. Comparing base (f8540cd) to head (c478c24).
⚠️ Report is 20 commits behind head on main.

Files with missing lines	Patch %	Lines
nodes/vr_sros/interface_map.go	85.10%	9 Missing and 5 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3240      +/-   ##
==========================================
+ Coverage   55.66%   55.91%   +0.24%     
==========================================
  Files         233      235       +2     
  Lines       24034    24242     +208     
==========================================
+ Hits        13379    13554     +175     
- Misses       9198     9222      +24     
- Partials     1457     1466       +9     

Files with missing lines	Coverage Δ
nodes/vr_sros/variant.go	100.00% <100.00%> (ø)
nodes/vr_sros/vr-sros.go	26.92% <100.00%> (-0.62%)	⬇️
nodes/vr_sros/interface_map.go	85.10% <85.10%> (ø)

... and 6 files with indirect coverage changes

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