move pack library docs to libpack.md

doc/en/scripting.md

@@ -14,6 +14,7 @@ Subsections:
     - [entities](scripting/builtins/libentities.md)
     - [cameras](scripting/builtins/libcameras.md)
     - [mat4](scripting/builtins/libmat4.md)
+    - [pack](scripting/builtins/libpack.md)
     - [player](scripting/builtins/libplayer.md)
     - [quat](scripting/builtins/libquat.md)
     - [vec2, vec3, vec4](scripting/builtins/libvecn.md)
@@ -40,112 +41,14 @@ require "packid:module_name" -- load Lua module from pack-folder/modules/
 -- no extension included, just name
 ```
 
-## *pack* library
-
-```python
-pack.is_installed(packid: str) -> bool
-```
-
-Check if specified pack is installed in the world
-
-```lua
-pack.data_file(packid: str, filename: str) -> str
--- and
-pack.shared_file(packid: str, filename: str) -> str
-```
-
-Returns the path to the data file
-and creates missing directories in the path.
-
-- The first option returns: `world:data/packid/filename`
-- The second option returns: `config:packid/filename`
-
-Examples:
-```lua
-file.write(pack.data_file(PACK_ID, "example.txt"), text)
-```
-For a *containermod* pack, write text to `world:data/containermod/example.txt`.
-
-Use this to store in-world data.
-
-```lua
-file.write(pack.shared_file(PACK_ID, "example.txt"), text)
-```
-For a *containermod* pack, write text to `config:containermod/example.txt`
-
-Use this to store shared data for all worlds.
-
-```python
-pack.get_folder(packid: str) -> str
-```
-
-Returns the path to the folder of the installed content pack.
-
-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`
-
-```python
-pack.get_folder(packid: str) -> str
-```
-
-Returns installed content-pack folder.
-
-```python
-pack.is_installed(packid: str) -> bool
-```
-
-Check if the world has specified pack installed.
-
-```python
-pack.get_installed() -> strings array
-```
-
-Returns all installed content-pack ids.
-
-```python
-pack.get_available() -> strings array
-```
-
-Returns the ids of all content packs available but not installed in the world.
-
-```python
-pack.get_base_packs() -> strings array
-```
-
-Returns the id of all base packages (non-removeable)
-
-```python
-pack.get_info(packid: str) -> {
-  id: str,
-  title: str,
-  creator: str,
-  description: str,
-  version: str,
-  icon: str,
-  dependencies: optional strings array
-}
-```
-
-Returns information about the pack (not necessarily installed).
-- icon - name of the preview texture (loading automatically)
-- dependencies - strings following format `{lvl}{id}`, where lvl:
-  - `!` - required
-  - `?` - optional
-  - `~` - weak
-  for example `!teal`
-
 ## *world* library
 
 ## Библиотека *world*
 
 ```python
 world.get_list() -> tables array {
-	name: str,
-	icon: str
+    name: str,
+    icon: str
 }
 ```