docs: added few methods on list/map

canary-checker/docs/scripting/cel.mdx

@@ -110,6 +110,124 @@ base64.decode("aGVsbG8=") // return b'hello'
 
 ## collections
 
+### .keys
+
+The `keys` method on a map returns a list of keys..
+
+Syntax:
+
+```javascript
+e.keys()
+
+// Where:
+//   `e` is a map .
+```
+
+Examples:
+
+```javascript
+{"first": "John", "last": "Doe"}.keys() // ["first", "last"]
+```
+
+### .merge
+
+The `merge` method on a map takes in a second map to merge with.
+
+Syntax:
+
+```javascript
+e.merge(x)
+
+// Where:
+//   `e` is the map you want to merge to.
+//   `x` is the second map to merge from.
+```
+
+Examples:
+
+```javascript
+{"first": "John"}.merge({"last": "Doe"}) // {"first": "John", "last": "Doe"}
+```
+
+### .omit
+
+The `omit` method on a map takes a list of keys to omit from the map.
+
+Syntax:
+
+```javascript
+e.omit(x)
+
+// Where:
+//   `e` is a list .
+//   `x` is a list of keys to omit.
+```
+
+Examples:
+
+```javascript
+{"first": "John", "last": "Doe"}.omit(["first"]) // {"last": "Doe"}
+```
+
+### .sort
+
+The `sort` method on a list returns the reversed list.
+
+Syntax:
+
+```javascript
+e.sort()
+
+// Where:
+//   `e` is a list .
+```
+
+Examples:
+
+```javascript
+[3, 2, 1].sort() // [1, 2, 3]
+['c', 'b', 'a'].sort() // ['a', 'b', 'c']
+```
+
+### .uniq
+
+The `uniq` method on a list returns a list of the unique elements.
+
+Syntax:
+
+```javascript
+e.uniq()
+
+// Where:
+//   `e` is a list .
+```
+
+Examples:
+
+```javascript
+[1,2,3,3,3,].uniq().sum() // 10
+["a", "b", "b"].uniq().join() // "ab"
+```
+
+### .values
+
+The `values` method on a map returns a list of values.
+
+Syntax:
+
+```javascript
+e.values()
+
+// Where:
+//   `e` is a map .
+```
+
+Examples:
+
+```javascript
+{'a': 1, 'b': 2}.values().sum() // 3
+```
+
 ### all
 
 The `all` macro tests whether a predicate holds for **all** elements of a list `e` or keys of a map `e`. It returns a boolean value based on the evaluation.