Add QL test for bun/tsx shebang recognition in TypeScript files

Add test files with #!/usr/bin/env bun, #!/usr/bin/env tsx, and
#!/usr/bin/env node shebangs. The query lists extracted .ts files,
verifying that all three shebangs are recognized and the files are
not skipped by the extractor.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

javascript/ql/test/library-tests/TypeScript/Shebangs/Shebangs.expected

@@ -0,0 +1,4 @@
+| shebang_bun.ts |
+| shebang_node.ts |
+| shebang_tsx.ts |
+| tsconfig.json |

javascript/ql/test/library-tests/TypeScript/Shebangs/Shebangs.ql

@@ -0,0 +1,4 @@
+import javascript
+
+from File f
+select f.getRelativePath()

javascript/ql/test/library-tests/TypeScript/Shebangs/shebang_bun.ts

@@ -0,0 +1,2 @@
+#!/usr/bin/env bun
+const x: number = 1;

javascript/ql/test/library-tests/TypeScript/Shebangs/shebang_node.ts

@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+const x: number = 1;

javascript/ql/test/library-tests/TypeScript/Shebangs/shebang_tsx.ts

@@ -0,0 +1,2 @@
+#!/usr/bin/env tsx
+const x: number = 1;

javascript/ql/test/library-tests/TypeScript/Shebangs/tsconfig.json

@@ -0,0 +1,3 @@
+{
+    "include": ["."]
+}