Add action and handler for gliding, equip, refactored PolicyParser and implementations to support world matching

docs/Policies.md

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+# Policies
+Policies are a list of nodes with a specific condition to be met, they also determine what effect a node is going to have. Below is an example policy:
+```yaml
+  - name: "Allow example"
+    type: "location"
+    effect: ALLOW
+    weight: 1
+    worlds: [world]
+    locations:
+      coordinates:
+        - corner1: { x: 2100, y: 256, z: 1400 }
+          corner2: { x: 1000, y: -64, z: 2200 }
+    nodes:
+      - [INTERACT, BREAK, HIT, PLACE]:
+          values:
+            - AIR
+```
+
+## Properties
+### `name`
+Name of the policy, must not contain spaces or else commands that require you to type the policy name will not work.
+
+Example: `name: "disable-axe-damage"`
+
+### `type`
+One of the policy [types](#Types).
+
+Example: `type: location`
+
+### `effect`
+Can be `deny` to block the action if a node check returns true, `ALLOW` to revert `DENY` effects if the node check is true or `ALLOWONLY` to allow the action **only** if the node check returns true.
+
+Example: `effect: DENY`
+
+### `weight`
+A policy with greater weight will override a conflicting policy of lower weight.
+
+Example: `weight: 0`
+
+### `nodes`
+Must contain a list of node mappings to evaluate if the policy applies to a player.
+
+Example:
+```yaml
+nodes:
+  - [HIT]:
+      values:
+        - '.*_AXE$'
+```
+
+### `locations`
+Only used for `type: "location"`, is a list of mappings where corner1 and corner2 should map x, y and z to two corners of a rectangular area where the policy will take effect; `worlds` may be defined here.
+
+Example:
+
+```yaml
+locations:
+  worlds: [world]
+  coordinates:
+    - corner1: { x: 2100, y: 256, z: 1400 }
+      corner2: { x: 1000, y: -64, z: 2200 }
+```
+
+### `permissions`
+Only used for `type: "permission"`, is a list of permissions.
+
+Example:
+
+```yaml
+permissions:
+  - "server.axehit"
+```
+
+### `names`
+Only used for `type: "playerName"`, is a list of player names.
+
+## Types
+
+### `global`
+Always matches.
+
+### `location`
+Matches if the player location is inside any rectangle defined in the `locations` property.
+
+### `playerName`
+Matches if the player name is in the `names` property.
+
+### `permission`
+Matches if the player has a permission in the `permissions` property.