Add a new syncRules field project files to allow users to specify middleware to use for files (#813)

src/project.rs

@@ -8,7 +8,7 @@ use std::{
 use serde::{Deserialize, Serialize};
 use thiserror::Error;
 
-use crate::{glob::Glob, resolution::UnresolvedValue};
+use crate::{glob::Glob, resolution::UnresolvedValue, snapshot::SyncRule};
 
 static PROJECT_FILENAME: &str = "default.project.json";
 
@@ -84,6 +84,12 @@ pub struct Project {
     #[serde(default, skip_serializing_if = "Vec::is_empty")]
     pub glob_ignore_paths: Vec<Glob>,
 
+    /// A list of mappings of globs to syncing rules. If a file matches a glob,
+    /// it will be 'transformed' into an Instance following the rule provided.
+    /// Globs are relative to the folder the project file is in.
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub sync_rules: Vec<SyncRule>,
+
     /// The path to the file that this project came from. Relative paths in the
     /// project should be considered relative to the parent of this field, also
     /// given by `Project::folder_location`.