Mocha test explorer

[elonmallin]

Add settings and deps for mocha-test-explorer extension

[github-actions[bot]]

Test Results Linux

11 tests  ±0   10 :heavy_check_mark:  - 1   6s :stopwatch: -1s   4 suites ±0     0 :zzz: ±0    1 files   ±0     1 :x: +1 

For more details on these failures, see this check.

Results for commit 0d8e4657. ± Comparison against base commit e257b27e.

This pull request removes 1 and adds 1 tests. Note that renamed tests count towards both.

Sample test ‑ Extension Test Suite Sample test

Test find all test files and build tree ‑ Test Explorer Test Suite Test find all test files and build tree

[github-actions[bot]]

Test Results macOS

0 tests   - 11   0 :heavy_check_mark:  - 11   0s :stopwatch: -13s 0 suites  -   4   0 :zzz: ±  0  0 files    -   1   0 :x: ±  0 

Results for commit 0d8e4657. ± Comparison against base commit e257b27e.

[github-actions[bot]]

Test Results Windows

0 tests   - 11   0 :heavy_check_mark:  - 11   0s :stopwatch: -27s 0 suites  -   4   0 :zzz: ±  0  0 files    -   1   0 :x: ±  0 

Results for commit 0d8e4657. ± Comparison against base commit e257b27e.