Update test framework: fix run_tests.py to support all test files, add auto-import-check for test files

node_modules/@opentelemetry/api/build/esm/trace/internal/tracestate-impl.d.ts

@@ -0,0 +1,22 @@
+import type { TraceState } from '../trace_state';
+/**
+ * TraceState must be a class and not a simple object type because of the spec
+ * requirement (https://www.w3.org/TR/trace-context/#tracestate-field).
+ *
+ * Here is the list of allowed mutations:
+ * - New key-value pair should be added into the beginning of the list
+ * - The value of any key can be updated. Modified keys MUST be moved to the
+ * beginning of the list.
+ */
+export declare class TraceStateImpl implements TraceState {
+    private _internalState;
+    constructor(rawTraceState?: string);
+    set(key: string, value: string): TraceStateImpl;
+    unset(key: string): TraceStateImpl;
+    get(key: string): string | undefined;
+    serialize(): string;
+    private _parse;
+    private _keys;
+    private _clone;
+}
+//# sourceMappingURL=tracestate-impl.d.ts.map