Add Lua integration and run keyword

src/content/docs/guides/syntax.md

@@ -8,7 +8,7 @@ sidebar:
 ---
 
 ## Comments
-Single line comments start with `//` and continue until the end of the line.
+Single-line comments start with `//` and continue until the end of the line.
 Multiline comments start with `/*` and end with `*/`.
 
 ```shulkerscript
@@ -32,6 +32,10 @@ They start with a `/` and are followed by the command.
 
 This will result in `say Hello, world!` being included in the `.mcfunction` file.
 
+:::note
+Literal commands are just syntactic sugar for the [`run`](#run) keyword.
+:::
+
 ## Functions
 Functions are blocks of code that can be executed.
 They start with `fn` followed by the name of the function, parenthesis and a block of code.
@@ -51,8 +55,7 @@ ShulkerScript always requires a `main` function to be present in the code.
 ### Annotations
 Annotations are special attributes that can be attached to functions.
 They start with `#` followed by the name of the annotation in square brackets. Some annotations can have arguments assigned to them with the `=` operator.
-
-Currently the following annotations are supported:
+Currently, the following annotations are supported:
 - `#[tick]`: The function will be executed every tick.
 - `#[load]`: The function will be executed when the data pack is loaded.
 - `#[deobfuscate]`: The function will keep the original name in the output (path of the `.shu`-file followed by the function name).
@@ -84,7 +87,7 @@ if ("block ~ ~-1 ~ minecraft:stone") {
 ```
 
 ## Groupings
-Groupings are used to group multiple commands together into one `mcfunction` file without declaring a new function.
+Groupings are used to group multiple commands into one `mcfunction` file without declaring a new function.
 This can be used for commands that need to be executed atomically.
 ```shulkerscript
 group {
@@ -92,3 +95,22 @@ group {
     /say World
 }
 ```
+
+## Run
+The `run` keyword is used to evaluate the following expression and include the resulting command in the output.
+```shulkerscript
+run "say Hello, world!"
+```
+
+:::tip
+In most cases, you can use [literal commands](#literal-commands) instead of the `run` keyword.
+:::
+
+## Lua Code
+The `lua` keyword is used to embed Lua code in your ShulkerScript code. It can be combined with the `run` keyword to include the result of the Lua code in the output.
+```shulkerscript
+run lua() {
+    // Lua code goes here
+    return "Hello, Lua!";
+}
+```

src/content/docs/reference/lua.md

@@ -0,0 +1,22 @@
+---
+title: Lua Integration
+description: Reference for writing Lua code in ShulkerScript
+sidebar:
+    badge:
+        text: WIP
+        variant: caution
+---
+
+ShulkerScript supports writing Lua code directly in your scripts. This allows you to use Lua's powerful features and libraries to extend the functionality of your scripts.
+
+The Lua code is embedded in the ShulkerScript code using the `lua` keyword. In the future, you will be able to pass arguments to the Lua code, but for now, you can only write Lua code without arguments.
+
+Your Lua code should return a string value when used in combination with the run keyword. This string returned will be included in the output.
+
+## Syntax
+```shulkerscript
+run lua() {
+    // Lua code goes here
+    return "Hello, Lua!";
+}
+```