feat: allow changing default command timeout (#2283)

* feat: allow changing default command timeout

* fix clippy

* add doc to exec_cmd in Context

* update docs in CONTRIBUTING.md

* Fix comment in CONTRIBUTING.md

Co-authored-by: Thomas O'Donnell <andytom@users.noreply.github.com>

Co-authored-by: Thomas O'Donnell <andytom@users.noreply.github.com>

src/configs/starship_root.rs

@@ -6,6 +6,7 @@ use starship_module_config_derive::ModuleConfig;
 pub struct StarshipRootConfig<'a> {
     pub format: &'a str,
     pub scan_timeout: u64,
+    pub command_timeout: u64,
     pub add_newline: bool,
 }
 
@@ -78,6 +79,7 @@ impl<'a> RootModuleConfig<'a> for StarshipRootConfig<'a> {
         StarshipRootConfig {
             format: "$all",
             scan_timeout: 30,
+            command_timeout: 500,
             add_newline: true,
         }
     }