feat: add is_default method to MetaPlugin and MetaPluginProgram

src/meta_plugin/program.rs

@@ -16,10 +16,11 @@ pub struct MetaPluginProgram {
     pub args: Vec<String>,
     pub supported: bool,
     pub meta_name: String,
+    pub is_default: bool,
 }
 
 impl MetaPluginProgram {
-    pub fn new(program: &str, args: Vec<&str>, meta_name: String) -> MetaPluginProgram {
+    pub fn new(program: &str, args: Vec<&str>, meta_name: String, is_default: bool) -> MetaPluginProgram {
         let program_path = get_program_path(program);
         let supported = program_path.is_ok();
 
@@ -28,6 +29,7 @@ impl MetaPluginProgram {
             args: args.iter().map(|s| s.to_string()).collect(),
             supported,
             meta_name,
+            is_default,
         }
     }
 }
@@ -72,6 +74,10 @@ impl MetaPlugin for MetaPluginProgram {
     fn meta_name(&mut self) -> String {
         self.meta_name.clone()
     }
+
+    fn is_default(&self) -> bool {
+        self.is_default
+    }
 }
 
 fn get_program_path(program: &str) -> Result<String> {