Merge branch 'main' into worldwide-refactor

doc/en/8.Scripting.md

@@ -13,6 +13,30 @@ load_script("packid:scripts/script_name.lua") -- load Lua script if not loaded y
 load_script("packid:scripts/script_name.lua", true) -- load Lua script anyway
 ```
 
+## *pack* library
+
+```python
+pack.is_installed(packid: str) -> bool
+```
+
+Check if specified pack is installed in the world
+
+```python
+pack.data_file(packid: str, filename: str) -> str
+```
+
+Returns data file path like `world:data/packid/filename` 
+and creates missing directories.
+
+Use this function when saving pack settings or other data to the world.
+
+Example:
+```lua
+file.write(pack.data_file(PACK_ID, "example.txt"), text)
+```
+
+For pack *containermod* will write text to the file `world:data/containermod/example.txt`
+
 ## *player* library