add entities.get_all(...), .get_all_in_box(...), .get_all_in_radius(...)

doc/en/scripting/builtins/libentities.md

@@ -14,6 +14,22 @@ entities.spawn(name: str, pos: vec3, [optional] args: table)
 
 -- Checks the existence of an entity by a unique identifier.
 entities.exists(uid: int) -> bool
+
+-- Returns a table of all loaded entities
+entities.get_all() -> table
+
+-- Returns a table of loaded entities based on the passed list of UIDs
+entities.get_all(uids: array<int>) -> table
+
+-- Returns a list of UIDs of entities inside the rectangular area
+-- pos - minimal area corner
+-- size - area size
+entities.get_all_in_box(pos: vec3, size: vec3) -> array<int>
+
+-- Returns a list of UIDs of entities inside the radius
+-- center - center of the area
+-- radius - radius of the area
+entities.get_all_in_radius(center: vec3, radius: number) -> array<int>
 ```
 
 ```lua