[TS/JS] Move TS tests to dedicated folder and deps upgrade (#7508)

* Move TS tests to dedicated folder and deps upgrade

* Attempt to fix generate_code

* Fix dir on CI

* Add js extension

* Fix missing extension

* Harmonize with test gen

* Unexplained code gen change

* Restore yarn.lock

* Naive attempt to fix bazel stuff

* Pin @bazel/typescript to 5.2.0

* Attempt to fix bazel

* More tweak

* Upgrade deps

* Tweak?

* Fix path

* Fix test package

Co-authored-by: Derek Bailey <derekbailey@google.com>

tests/ts/my-game/in-parent-namespace.js

@@ -0,0 +1,50 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+export class InParentNamespace {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsInParentNamespace(bb, obj) {
+        return (obj || new InParentNamespace()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsInParentNamespace(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new InParentNamespace()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getFullyQualifiedName() {
+        return 'MyGame_InParentNamespace';
+    }
+    static startInParentNamespace(builder) {
+        builder.startObject(0);
+    }
+    static endInParentNamespace(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createInParentNamespace(builder) {
+        InParentNamespace.startInParentNamespace(builder);
+        return InParentNamespace.endInParentNamespace(builder);
+    }
+    serialize() {
+        return this.bb.bytes();
+    }
+    static deserialize(buffer) {
+        return InParentNamespace.getRootAsInParentNamespace(new flatbuffers.ByteBuffer(buffer));
+    }
+    unpack() {
+        return new InParentNamespaceT();
+    }
+    unpackTo(_o) { }
+}
+export class InParentNamespaceT {
+    constructor() { }
+    pack(builder) {
+        return InParentNamespace.createInParentNamespace(builder);
+    }
+}