chore(lfs): Added manifest_path to FoundDependency (#311)

In order to better support PTT, the CLI will now be able to record a
dependency's manifest filepath using the new attribute added in this PR.

- [x] I ran `make setup && make` to update the generated code after
editing a `.atd` file (TODO: have a CI check)
- [x] I made sure we're still backward compatible with old versions of
the CLI.
For example, the Semgrep backend need to still be able to *consume* data
generated
	  by Semgrep 1.17.0.
See
https://atd.readthedocs.io/en/latest/atdgen-tutorial.html#smooth-protocol-upgrades

Author: SayyantR

semgrep_output_v1.atd

@@ -1113,6 +1113,11 @@ type found_dependency = {
     <ts repr="map">;
   ?resolved_url: string option;
   transitivity: transitivity;
+  (* Path to the manifest file that defines the project containing this dependency
+   *
+   * Examples: package.json, nested/folder/pom.xml
+   *)
+  ?manifest_path: fpath option;
   (* Path to the lockfile that contains this dependency. 
    *
    * Examples: package-lock.json, nested/folder/requirements.txt, go.mod