Add projectName to serve output

rojo-test/serve-test-snapshots/end_to_end__tests__serve__add_folder_info.snap

@@ -3,6 +3,7 @@ source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
+projectName: add_folder
 protocolVersion: 3
 rootInstanceId: id-2
 serverVersion: "[server-version]"

rojo-test/serve-test-snapshots/end_to_end__tests__serve__edit_init_info.snap

@@ -3,6 +3,7 @@ source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
+projectName: edit_init
 protocolVersion: 3
 rootInstanceId: id-2
 serverVersion: "[server-version]"

rojo-test/serve-test-snapshots/end_to_end__tests__serve__empty_info.snap

@@ -3,6 +3,7 @@ source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
+projectName: empty
 protocolVersion: 3
 rootInstanceId: id-2
 serverVersion: "[server-version]"

rojo-test/serve-test-snapshots/end_to_end__tests__serve__move_folder_of_stuff_info.snap

@@ -3,6 +3,7 @@ source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
+projectName: move_folder_of_stuff
 protocolVersion: 3
 rootInstanceId: id-2
 serverVersion: "[server-version]"

rojo-test/serve-test-snapshots/end_to_end__tests__serve__remove_file_info.snap

@@ -3,6 +3,7 @@ source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
+projectName: remove_file
 protocolVersion: 3
 rootInstanceId: id-2
 serverVersion: "[server-version]"

rojo-test/serve-test-snapshots/end_to_end__tests__serve__scripts_info.snap

@@ -3,6 +3,7 @@ source: tests/tests/serve.rs
 expression: redactions.redacted_yaml(info)
 ---
 expectedPlaceIds: ~
+projectName: scripts
 protocolVersion: 3
 rootInstanceId: id-2
 serverVersion: "[server-version]"

src/web/api.rs

@@ -67,6 +67,7 @@ impl ApiService {
             server_version: SERVER_VERSION.to_owned(),
             protocol_version: PROTOCOL_VERSION,
             session_id: self.serve_session.session_id(),
+            project_name: self.serve_session.project_name().to_owned(),
             expected_place_ids: self.serve_session.serve_place_ids().cloned(),
             root_instance_id,
         })

src/web/interface.rs

@@ -89,6 +89,7 @@ pub struct ServerInfoResponse {
     pub session_id: SessionId,
     pub server_version: String,
     pub protocol_version: u64,
+    pub project_name: String,
     pub expected_place_ids: Option<HashSet<u64>>,
     pub root_instance_id: RbxId,
 }