Replace ZOWE_EDITOR with ZOWE_OPT_EDITOR for consistency

[t1m0thyj]

What It Does

• Replaces the ZOWE_EDITOR environment variable with ZOWE_OPT_EDITOR and --editor option on commands
• Removes check for ZOWE_EDITOR environment variable in ProcessUtils.openInEditor

How to Test
Run the following commands with the --editor option:

• zowe config edit
• zowe config auto-init --edit
• zowe config init --edit

Review Checklist
I certify that I have:

• tested my changes
• added/updated automated tests
• updated the changelog
• followed the contribution guidelines

Additional Comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (4d8999e) 91.03% compared to head (ba76246) 91.03%.
Report is 2 commits behind head on next.

Additional details and impacted files

@@            Coverage Diff             @@
##             next    #1974      +/-   ##
==========================================
- Coverage   91.03%   91.03%   -0.01%     
==========================================
  Files         635      635              
  Lines       18613    18608       -5     
  Branches     3861     3859       -2     
==========================================
- Hits        16944    16939       -5     
  Misses       1668     1668              
  Partials        1        1              

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

100.0% Coverage
0.0% Duplication

fixed lint warnings

[traeok]

LGTM, thanks @t1m0thyj

[zFernand0]

thanks for fixing the changelog

[github-actions]

Release succeeded for the next branch. 🎉

The following packages have been published:

• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]
• npm: @zowe/[email protected]

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