Trim token value from Clipboard

[vrubezhny]

Also the sha256-token validation is fixed.

When using 'Developer Sandbox` to login to the DevSandbox and a token is already stored in the Clipboard, its value isn't trimmed before its validation and usage:

So, when the sha256-token value begins with a whitespace character the Login to DevSandbox button is shown as disabled and its tooltip says: "Token in clibboard is invalid....":

Also, the sha256 token validation RegEx incorrectly validates provided token - it doesn't accept - character as a part of token value and doesn't control the ending thus allowing a whitespaces or any text to be placed after a whitespace or '-' character.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 44.09%. Comparing base (da60441) to head (855512f).
Report is 260 commits behind head on main.

Files	Patch %	Lines
src/openshift/cluster.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #4166       +/-   ##
===========================================
+ Coverage   32.37%   44.09%   +11.72%     
===========================================
  Files          85       91        +6     
  Lines        6505     7291      +786     
  Branches     1349     1523      +174     
===========================================
+ Hits         2106     3215     +1109     
+ Misses       4399     4076      -323     

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[datho7561]

Looks good to me! Thanks, Victor!