feat: Display better message when AWS credentials missing

[eliecharra]

Q	A
🐛 Bug fix?	no
🚀 New feature?	yes
⚠ Deprecations?	no
❌ BC Break	no
🔗 Related issues	CFG-1917
❓ Documentation	no

Description

Display a more human readable error message when AWS credentials are missing

[codecov-commenter]

Codecov Report

Merging #1515 (f9ce34d) into main (0786e71) will increase coverage by 6.10%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #1515      +/-   ##
==========================================
+ Coverage   75.61%   81.71%   +6.10%     
==========================================
  Files         514      439      -75     
  Lines       19338    16023    -3315     
==========================================
- Hits        14622    13093    -1529     
+ Misses       4415     2613    -1802     
- Partials      301      317      +16     

Impacted Files	Coverage Δ
pkg/remote/aws/init.go	0.00% <0.00%> (-96.02%)	⬇️
pkg/remote/aws/provider.go	45.83% <0.00%> (-37.96%)	⬇️
pkg/terraform/plugin_client.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/remote/aws/client/s3_client_factory.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/resource/azurerm/azurerm_image.go	12.50% <0.00%> (-87.50%)	⬇️
pkg/resource/azurerm/azurerm_resource_group.go	12.50% <0.00%> (-87.50%)	⬇️
pkg/resource/azurerm/azurerm_container_registry.go	12.50% <0.00%> (-87.50%)	⬇️
pkg/resource/google/google_compute_address.go	14.28% <0.00%> (-85.72%)	⬇️
...g/resource/google/google_compute_global_address.go	14.28% <0.00%> (-85.72%)	⬇️
... and 185 more