feat: enable export to json file

[wgnf]

📫 Addressed Issue(s)

• Closes #16

📄 Description

Adds the ability to export all the determined project-references and their metadata to a specified JSON file.

✅ Checks

• [x] My PR adheres to the general code-style of this project (look at other code if you're unsure)
• [x] My code requires changes to the documentation
• [x] I have updated the documentation as required
• [x] All the automated tests have passed

ℹ Additional Information

-

[codecov[bot]]

Codecov Report

Merging #142 (79c3ff4) into release/2.1 (c9039d6) will increase coverage by 0.03%. The diff coverage is 97.71%.

:exclamation: Current head 79c3ff4 differs from pull request most recent head 9075c94. Consider uploading reports for the commit 9075c94 to get more accurate results

@@               Coverage Diff               @@
##           release/2.1     #142      +/-   ##
===============================================
+ Coverage        96.40%   96.44%   +0.03%     
===============================================
  Files               54       55       +1     
  Lines             2450     2587     +137     
===============================================
+ Hits              2362     2495     +133     
- Misses              88       92       +4     

Files Changed	Coverage Δ
src/Tool/Liz.Tool/CommandLine/CommandRunner.cs	94.11% <60.00%> (-3.76%)	:arrow_down:
src/Tool/Liz.Tool/CommandLine/CommandProvider.cs	79.72% <84.61%> (+0.33%)	:arrow_up:
...z.Core/Result/ExportLicenseTextsResultProcessor.cs	100.00% <100.00%> (ø)
...ore/Liz.Core/Result/ExportToJsonResultProcessor.cs	100.00% <100.00%> (ø)
...Nuke/Liz.Nuke/ExtractLicensesSettingsExtensions.cs	100.00% <100.00%> (ø)