Upload symbol analysis per subproject (#429)

- [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 1.50.0.
See
https://atd.readthedocs.io/en/latest/atdgen-tutorial.html#smooth-protocol-upgrades
	  Note that the types related to the semgrep-core JSON output or the
	  semgrep-core RPC do not need to be backward compatible!
- [ ] Any accompanying changes in `semgrep-proprietary` are approved and
ready to merge once this PR is merged

Author: TikhonJelvis

semgrep_output_v1.atd

@@ -3364,6 +3364,21 @@ type symbol_usage
 
 type symbol_analysis <ocaml attr="deriving show"> = symbol_usage list
 
+type upload_subproject_symbol_analysis_params = {
+  token: string;
+  scan_id: int;
+  manifest: fpath option;
+  lockfile: fpath option;
+  symbol_analysis: symbol_analysis;
+}
+
+type subproject_symbol_analysis_url_request
+  <doc text="Sent by the CLI to the POST /api/agent/scans/{scan_id}/subproject_symbols_upload_url/">
+  = {
+  manifest_path: fpath option;
+  lockfile_path: fpath option;
+}
+
 (* ----------------------------- *)
 (* The call *)
 (* ----------------------------- *)
@@ -3398,6 +3413,7 @@ type function_call <python decorator="dataclass(frozen=True)"> = [
   | CallMatchSubprojects of fpath list
   (* run symbol analysis for the project rooted in the given directory *)
   | CallRunSymbolAnalysis of symbol_analysis_params
+  | CallUploadSubprojectSymbolAnalysis of upload_subproject_symbol_analysis_params
   (*************************************************************************)
   (* Text output formatting *)
   (*************************************************************************)
@@ -3432,6 +3448,9 @@ type function_return <python decorator="dataclass(frozen=True)"> = [
   | RetGetTargets of target_discovery_result
   | RetMatchSubprojects of subproject list
   | RetRunSymbolAnalysis of symbol_analysis
+  | RetUploadSubprojectSymbolAnalysis
+      <doc text="success msg">
+      of string
   (*************************************************************************)
   (* Text output formatting *)
   (*************************************************************************)