add docs for length and less than task

_data/navigation.js

@@ -599,6 +599,14 @@ module.exports = {
                 title: 'Sum',
                 url: '/docs/jobs/task-types/sum/',
               },
+              {
+                title: 'Less Than',
+                url: '/docs/jobs/task-types/lessthan/',
+              },
+              {
+                title: 'Length',
+                url: '/docs/jobs/task-types/length/',
+              },
               {
                 title: 'Hex Decode',
                 url: '/docs/jobs/task-types/hexdecode/',

docs/chainlink-nodes/oracle-jobs/task-types/task_length.md

@@ -0,0 +1,27 @@
+---
+layout: nodes.liquid
+section: nodeOperator
+date: Last Modified
+title: "Length Task"
+permalink: "docs/jobs/task-types/length/"
+---
+
+Returns the length of a byte array or string.
+
+**Parameters**
+
+- `input`: Byte array, or string to get the length for.
+
+**Outputs**
+
+The length of the byte array or string.
+
+**Note**: For strings containing multi-byte unicode characters, the output is the length in bytes and not number of characters.
+
+**Example**
+
+```jpv2
+my_length_task [type="length" input="xyz"]
+```
+
+Given the input string "xyz", the task will return 3, length of the string.

docs/chainlink-nodes/oracle-jobs/task-types/task_lessthan.md

@@ -0,0 +1,34 @@
+---
+layout: nodes.liquid
+section: nodeOperator
+date: Last Modified
+title: "Less Than Task"
+permalink: "docs/jobs/task-types/lessthan/"
+---
+
+Returns a boolean, result of computing `left` < `right`.
+
+**Parameters**
+
+- `left`: the left hand side of comparison. Possible values:
+    - number
+    - stringified number
+    - bytes-ified number
+    - `$(variable)`
+- `right`: the right hand side of comparison. Possible values:
+    - number
+    - stringified number
+    - bytes-ified number
+    - `$(variable)`
+
+**Outputs**
+
+The result of less than comparison.
+
+**Example**
+
+```jpv2
+my_lessthan_task [type="lessthan" left="3" right="10"]
+```
+
+the task will return true which is the result of `3 < 10`