EN-4286: Jira add comment lego (#377)

Jira/legos/jira_add_comment/README.md

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+[<img align="left" src="https://unskript.com/assets/favicon.png" width="100" height="100" style="padding-right: 5px">](https://unskript.com/assets/favicon.png) 
+<h2>Get Jira Add Comment</h2>
+
+<br>
+
+## Description
+This Lego adds a comment to a Jira Issue.
+
+
+## Lego Details
+
+    jira_add_comment(handle: JIRA, issue_id: str, comment: str, visibility: Dict[str, str] = None)
+
+        handle: Object of type unSkript jira Connector
+        issue_id: Issue ID.
+        comment: Comment to add in Jira Issue.
+        visibility: a dict containing two entries: "type" and "value".
+              "type" is 'role' (or 'group' if the Jira server has configured comment visibility for groups)
+              "value" is the name of the role (or group) to which viewing of this comment will be restricted.
+        is_internal: True marks the comment as 'Internal' in Jira Service Desk (Default: ``False``)
+
+## Lego Input
+This Lego take 4 input handle, issue_id, comment, visibility.
+
+## Lego Output
+Here is a sample output.
+<img src="./1.png">
+
+## See it in Action
+
+You can see this Lego in action following this link [unSkript Live](https://us.app.unskript.io)

Jira/legos/jira_add_comment/jira_add_comment.json

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+{
+    "action_title": "Jira Add Comment",
+    "action_description": "Add a Jira Comment",
+    "action_type": "LEGO_TYPE_JIRA",
+    "action_entry_function": "jira_add_comment",
+    "action_needs_credential": true,
+    "action_output_type": "ACTION_OUTPUT_TYPE_INT",
+    "action_supports_poll": true,
+    "action_supports_iteration": true
+}
+

Jira/legos/jira_add_comment/jira_add_comment.py

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+##
+# Copyright (c) 2021 unSkript, Inc
+# All rights reserved.
+##
+
+from jira.client import JIRA
+from pydantic import BaseModel, Field
+from typing import Dict, Optional
+import pprint
+
+
+class InputSchema(BaseModel):
+    issue_id: str = Field(
+        title='JIRA Issue ID',
+        description='Issue ID. Eg EN-1234'
+    )
+    comment: str = Field(
+        title='Comment',
+        description='Comment to add in Jira Issue'
+    )
+    visibility: Optional[Dict[str, str]] = Field(
+        None,
+        title='Visibility',
+        description='''a dict containing two entries: "type" and "value".
+              "type" is 'role' (or 'group' if the Jira server has configured comment visibility for groups)
+              "value" is the name of the role (or group) to which viewing of this comment will be restricted.'''
+    )
+    is_internal: Optional[bool] = Field(
+        False,
+        title='Internal',
+        description='True marks the comment as \'Internal\' in Jira Service Desk (Default: ``False``)'
+    )
+
+
+def jira_add_comment_printer(output):
+    if output is None:
+        return
+    pprint.pprint(output)
+
+
+def jira_add_comment(hdl: JIRA,
+                     issue_id: str,
+                     comment: str,
+                     visibility: Dict[str, str] = None,
+                     is_internal: bool = False) -> int:
+    """jira_get_issue Get Jira Issue Info
+
+        :type hdl: JIRA
+        :param hdl: Jira handle.
+
+        :type issue_id: str
+        :param issue_id: Issue ID.
+
+        :type comment: str
+        :param comment: Comment to add in Jira Issue.
+
+        :type visibility: Dict[str, str]
+        :param visibility: a dict containing two entries: "type" and "value".
+              "type" is 'role' (or 'group' if the Jira server has configured comment visibility for groups)
+              "value" is the name of the role (or group) to which viewing of this comment will be restricted.
+
+        :type is_internal: bool
+        :param is_internal: True marks the comment as \'Internal\' in Jira Service Desk (Default: ``False``)
+
+        :rtype: Jira comment id (int)
+    """
+    try:
+        issue = hdl.issue(issue_id)
+        comment = hdl.add_comment(issue, comment, visibility=visibility, is_internal=is_internal)
+    except Exception as e:
+        raise e
+    return int(comment.id)