Create .jira_sync_config.yaml (#128)

Establishing and initial gh to jira sync config

.github/.jira_sync_config.yaml

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+settings:
+    # Jira project key to create the issue in
+  jira_project_key: "CERTTF"
+
+  # Dictionary mapping GitHub issue status to Jira issue status
+  status_mapping:
+    opened: Untriaged
+    closed: done 
+
+  # (Optional) Jira project components that should be attached to the created issue
+  # Component names are case-sensitive
+  # components:
+  #  - IoT
+  #  - DACH TT
+
+  # (Optional) GitHub labels. Only issues with one of those labels will be synchronized.
+  # If not specified, all issues will be synchronized
+  #labels:
+  #  - bug
+  #  - custom
+
+  # (Optional) (Default: false) Add a new comment in GitHub with a link to Jira created issue
+  add_gh_comment: true
+
+  # (Optional) (Default: true) Synchronize issue description from GitHub to Jira
+  sync_description: true
+
+  # (Optional) (Default: true) Synchronize comments from GitHub to Jira
+  sync_comments: true
+
+  # (Optional) (Default: None) Parent Epic key to link the issue to
+  # epic_key: "MTC-296"
+
+  # (Optional) Dictionary mapping GitHub issue labels to Jira issue types. 
+  # If label on the issue is not in specified list, this issue will be created as a Bug
+  # label_mapping:
+  #  enhancement: Story