Add syntax highlighting for all httpsnippet languages

Added 15 new EditorLanguage variants: c, clojure, csharp, go, java,
kotlin, objective_c, ocaml, php, powershell, python, r, ruby, shell,
swift.

Uses first-class CodeMirror packages for go, java, php, python and
@codemirror/legacy-modes for the rest. Also sorts preferred clients
(fetch) to the top for JavaScript/Node targets.

crates/yaak-plugins/bindings/gen_events.ts

@@ -66,7 +66,7 @@ export type DeleteModelRequest = { model: string, id: string, };
 
 export type DeleteModelResponse = { model: AnyModel, };
 
-export type EditorLanguage = "text" | "javascript" | "json" | "html" | "xml" | "graphql" | "markdown";
+export type EditorLanguage = "text" | "javascript" | "json" | "html" | "xml" | "graphql" | "markdown" | "c" | "clojure" | "csharp" | "go" | "java" | "kotlin" | "objective_c" | "ocaml" | "php" | "powershell" | "python" | "r" | "ruby" | "shell" | "swift";
 
 export type EmptyPayload = {};
 

crates/yaak-plugins/src/events.rs

@@ -951,6 +951,21 @@ pub enum EditorLanguage {
     Xml,
     Graphql,
     Markdown,
+    C,
+    Clojure,
+    Csharp,
+    Go,
+    Java,
+    Kotlin,
+    ObjectiveC,
+    Ocaml,
+    Php,
+    Powershell,
+    Python,
+    R,
+    Ruby,
+    Shell,
+    Swift,
 }
 
 impl Default for EditorLanguage {