Adds support for remote Terraform modules and scanning remotely for other IaC tools

[kanchwala-yusuf]

Adding support for downloading remote modules in:

• CLI
• API server
• Terraform IaC scanning

Closes #2

[codecov]

Codecov Report

Merging #345 into master will increase coverage by 1.73%.
The diff coverage is 76.30%.

@@            Coverage Diff             @@
##           master     #345      +/-   ##
==========================================
+ Coverage   62.05%   63.78%   +1.73%     
==========================================
  Files          61       66       +5     
  Lines        1215     1378     +163     
==========================================
+ Hits          754      879     +125     
- Misses        391      419      +28     
- Partials       70       80      +10     

Impacted Files	Coverage Δ
pkg/cli/scan.go	34.28% <50.00%> (+3.03%)	⬆️
pkg/iac-providers/terraform/v12/load-dir.go	80.85% <61.53%> (-3.36%)	⬇️
pkg/http-server/remote-repo.go	62.96% <62.96%> (ø)
pkg/cli/run.go	42.30% <64.28%> (+8.97%)	⬆️
pkg/downloader/getter.go	82.69% <82.69%> (ø)
pkg/downloader/interface.go	100.00% <100.00%> (ø)
pkg/http-server/routes.go	100.00% <100.00%> (ø)
pkg/iac-providers/terraform/v12/module-download.go	100.00% <100.00%> (ø)
pkg/utils/random_string.go	100.00% <100.00%> (ø)
... and 5 more

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
1 Code Smell

No Coverage information
3.0% Duplication