Add SBOM manifest to nuget packages

[PaulHigin]

This PR adds SBOM manifests for created nuget packages for coordinated package builds.

SBOM manifests are added by splitting the existing New-ILNugetPacakge function, which creates all nuget packages at once, into New-ILNugetPackageSource and New-ILNugetPackageFromSource functions. These new functions create source and package for just one file at a time, so that an SBOM manifest can be created (via yml template) for each file/package.

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[JamesWTruher]

just a couple of suggestions but otherwise looks good

[ghost]

This pull request has been automatically marked as Review Needed because it has been there has not been any activity for 7 days.
Maintainer, please provide feedback and/or mark it as Waiting on Author

[TravisEz13]

Please give your thoughts on the comments I left

[PaulHigin]

@adityapatwardhan Ping...

[pull-request-quantifier-deprecated]

This PR has 428 quantified lines of changes. In general, a change size of upto 200 lines is ideal for the best PR experience!

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Quantification details

Label      : Extra Large
Size       : +293 -135
Percentile : 80.93%

Total files changed: 6

Change summary by file extension:
.psm1 : +214 -127
.json : +1 -1
.psd1 : +2 -0
.yml : +76 -7

Change counts above are quantified counts, based on the PullRequestQuantifier customizations.

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[ghost]

🎉v7.3.0-preview.2 has been released which incorporates this pull request.:tada:

Handy links:

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