Add severity argument to GoToDiagnostic actions (#33995)

This PR adds a `severity` argument so severity can be defined when
navigating through diagnostics. This allows keybinds like the following:

```json
{
  "] e": ["editor::GoToDiagnostic", { "severity": "error" }],
  "[ e": ["editor::GoToDiagnostic", { "severity": "error" }]
}
```

I've added test comments and a test. Let me know if there's anything
else you need!

Release Notes:

- Add `severity` argument to `editor::GoToDiagnostic`,
`editor::GoToPreviousDiagnostic`, `project_panel::SelectNextDiagnostic`
and `project_panel::SelectPrevDiagnostic` actions

crates/editor/src/actions.rs

@@ -1,6 +1,7 @@
 //! This module contains all actions supported by [`Editor`].
 use super::*;
 use gpui::{Action, actions};
+use project::project_settings::GoToDiagnosticSeverityFilter;
 use schemars::JsonSchema;
 use util::serde::default_true;
 
@@ -265,6 +266,24 @@ pub enum UuidVersion {
     V7,
 }
 
+/// Goes to the next diagnostic in the file.
+#[derive(PartialEq, Clone, Default, Debug, Deserialize, JsonSchema, Action)]
+#[action(namespace = editor)]
+#[serde(deny_unknown_fields)]
+pub struct GoToDiagnostic {
+    #[serde(default)]
+    pub severity: GoToDiagnosticSeverityFilter,
+}
+
+/// Goes to the previous diagnostic in the file.
+#[derive(PartialEq, Clone, Default, Debug, Deserialize, JsonSchema, Action)]
+#[action(namespace = editor)]
+#[serde(deny_unknown_fields)]
+pub struct GoToPreviousDiagnostic {
+    #[serde(default)]
+    pub severity: GoToDiagnosticSeverityFilter,
+}
+
 actions!(
     debugger,
     [
@@ -424,8 +443,6 @@ actions!(
         GoToDefinition,
         /// Goes to definition in a split pane.
         GoToDefinitionSplit,
-        /// Goes to the next diagnostic in the file.
-        GoToDiagnostic,
         /// Goes to the next diff hunk.
         GoToHunk,
         /// Goes to the previous diff hunk.
@@ -440,8 +457,6 @@ actions!(
         GoToParentModule,
         /// Goes to the previous change in the file.
         GoToPreviousChange,
-        /// Goes to the previous diagnostic in the file.
-        GoToPreviousDiagnostic,
         /// Goes to the type definition of the symbol at cursor.
         GoToTypeDefinition,
         /// Goes to type definition in a split pane.