feat: add julia language highlighting and execution support (#561)

This adds support for highlighting and executing julia code snippets. 

Closes #559

config-file-schema.json

@@ -702,6 +702,7 @@
             "Java",
             "JavaScript",
             "Json",
+            "Julia",
             "Kotlin",
             "Latex",
             "Lua",

executors.yaml

@@ -42,6 +42,11 @@ js:
   commands:
     - ["node", "$pwd/snippet.js"]
   hidden_line_prefix: "/// "
+julia:
+  filename: snippet.jl
+  commands:
+    - ["julia", "$pwd/snippet.jl"]
+  hidden_line_prefix: "/// "
 kotlin:
   filename: snippet.kts
   commands:

src/code/highlighting.rs

@@ -131,6 +131,7 @@ impl SnippetHighlighter {
             Java => "java",
             JavaScript => "js",
             Json => "json",
+            Julia => "jl",
             Kotlin => "kt",
             Latex => "tex",
             Lua => "lua",

src/code/snippet.rs

@@ -470,6 +470,7 @@ pub enum SnippetLanguage {
     Java,
     JavaScript,
     Json,
+    Julia,
     Kotlin,
     Latex,
     Lua,
@@ -541,6 +542,7 @@ impl FromStr for SnippetLanguage {
             "java" => Java,
             "javascript" | "js" => JavaScript,
             "json" => Json,
+            "julia" => Julia,
             "kotlin" => Kotlin,
             "latex" => Latex,
             "lua" => Lua,