feat(instance): redirect to scw login when no credentials are provided

[Mia-Cross]

Closes #4080

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 15 lines in your changes missing coverage. Please review.

Project coverage is 55.22%. Comparing base (5bf53e0) to head (1eba328).
Report is 559 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/platform/terminal/terminal_client.go	0.00%	13 Missing ⚠️
core/client.go	0.00%	2 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (5bf53e0) and HEAD (1eba328). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (5bf53e0)	HEAD (1eba328)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #4617       +/-   ##
===========================================
- Coverage   75.45%   55.22%   -20.23%     
===========================================
  Files         202      304      +102     
  Lines       44323    69757    +25434     
===========================================
+ Hits        33444    38524     +5080     
- Misses       9653    29836    +20183     
- Partials     1226     1397      +171     

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