Symantec Endpoint Security (New pack) (#36694)

* folder structure

* commit

* commit

* continue development

* continue development

* Add UTs

* Add UT and add docstring for some functions and update Docker

* pre-commit

* add docstring

* add UT and fix filter_duplicate_events function

* add UTs

* change the Client Secret to Token

* add image

* commit

* add UTs

* commit

* commit

* add UT

* autopep8

* commit

* more changes

* commit

* commit

* corrections

* commit end

* update Docker and add UT

* some comment corrections

* some comment corrections

* fix UTs

* generated docs

* comment corrections

* comment corrections

* Apply suggestions from code review

docs review

Co-authored-by: ShirleyDenkberg <[email protected]>

* add link for more information to obtain the Token parameter

* commit

* ruff fix

* change the test-module command

* remove UT un-necessary

* commit

* comment corrections

* comment corrections

* comment correction

---------

Co-authored-by: ShirleyDenkberg <[email protected]>

Packs/SymantecEndpointSecurity/Integrations/SymantecEndpointSecurity/README.md

@@ -0,0 +1,38 @@
+Symantec Endpoint Security Event Collector for Cortex XSIAM.
+
+## Configure Symantec Endpoint Security on Cortex XSIAM
+
+1. Navigate to Settings > Configurations > Data Collection > Automations & Feed Integrations.
+2. Search for Symantec Endpoint Security.
+3. Click **Add instance** to create and configure a new integration instance.
+
+    | **Parameter** | **Required** |
+    | --- | --- |
+    | Server URL | True |
+    | OAuth credential | True |
+    | Stream ID | True |
+    | Channel ID | True |
+    | Fetch interval in seconds | True |
+    | Use system proxy settings | False |
+    | Trust any certificate (not secure) | False |
+
+4. Click **Test** to validate the URLs, token, and connection.
+
+
+### To generate a token for the ***Token*** parameter:
+
+1. Log in to the Symantec Endpoint Security console.
+2. Click **Integration** > **Client Applications**.
+3. Choose `Add Client Application`.
+4. Choose a name for the application, then click `Add`. The client application details screen will appear.
+5. Click `⋮` and select `Client Secret`.
+6. Click the ellipsis and select **Client Secret**.
+7. Click the `copy` icon next to `OAuth Credentials`.
+
+For more information on obtaining *OAuth Credentials*, refer to [this documentation](https://apidocs.securitycloud.symantec.com/#/doc?id=ses_auth) or watch [this video](https://youtu.be/d7LRygRfDLc?si=NNlERXtfzv4LjpsB).
+
+**Note:** 
+
+- No need to generate the bearer token, the integration uses the provided `OAuth Credentials` to generate one.
+- The `test_module` test checks only the validity of the `OAuth credential` parameter and does not validate the `Channel ID` and `Stream ID` parameters.
+- Fetching events that occurred at a specific time may be delayed due to delays in event ingestion on Symantec's side.