Revert "Revert "Tests for NumericSeparatorLiteral. Closes gh-1051" (#1188)"

...rals/numeric/numeric-separator-literal-dil-dot-nsl-err.js

...als/numeric/numeric-separator-literal-dot-dd-nsl-dd-ep.js

...ls/numeric/numeric-separator-literal-dot-dd-nsl-dds-ep.js

...ls/numeric/numeric-separator-literal-dot-dds-nsl-dd-ep.js

...s/numeric/numeric-separator-literal-dot-dds-nsl-dds-ep.js

...s/numeric/numeric-separator-literal-dot-dds-nsl-ep-err.js

...erals/numeric/numeric-separator-literal-dot-nsl-ep-err.js

...literals/numeric/numeric-separator-literal-dot-nsl-err.js

...ls/numeric/numeric-separator-literal-hil-hd-nsl-hd-err.js

...terals/numeric/numeric-separator-literal-hil-hd-nsl-hd.js

...erals/numeric/numeric-separator-literal-hil-hd-nsl-hds.js

...erals/numeric/numeric-separator-literal-hil-hds-nsl-hd.js

...rals/numeric/numeric-separator-literal-hil-hds-nsl-hds.js

...umeric/numeric-separator-literal-hil-nsl-hd-dunder-err.js

...erals/numeric/numeric-separator-literal-hil-nsl-hd-err.js

...numeric/numeric-separator-literal-hil-od-nsl-od-one-of.js

...ls/numeric/numeric-separator-literal-nzd-nsl-dd-one-of.js

.../literals/numeric/numeric-separator-literal-nzd-nsl-dd.js

...meric/numeric-separator-literal-nzd-nsl-dds-dunder-err.js

...numeric-separator-literal-nzd-nsl-dds-leading-zero-err.js