Add initial tests for import.meta (#1888)

features.txt

...guage/expressions/import.meta/distinct-for-each-module.js

...pressions/import.meta/distinct-for-each-module_FIXTURE.js

...ressions/import.meta/import-meta-is-an-ordinary-object.js

...xpressions/import.meta/not-accessible-from-direct-eval.js

.../language/expressions/import.meta/same-object-returned.js

.../expressions/import.meta/syntax/escape-sequence-import.js

...ge/expressions/import.meta/syntax/escape-sequence-meta.js

.../import.meta/syntax/goal-async-function-params-or-body.js

...import.meta/syntax/goal-async-generator-params-or-body.js

...ssions/import.meta/syntax/goal-function-params-or-body.js

...sions/import.meta/syntax/goal-generator-params-or-body.js

...essions/import.meta/syntax/goal-module-nested-function.js

test/language/expressions/import.meta/syntax/goal-module.js

test/language/expressions/import.meta/syntax/goal-script.js

...tax/invalid-assignment-target-array-destructuring-expr.js

...nvalid-assignment-target-array-rest-destructuring-expr.js

....meta/syntax/invalid-assignment-target-assignment-expr.js

...eta/syntax/invalid-assignment-target-for-await-of-loop.js

...port.meta/syntax/invalid-assignment-target-for-in-loop.js