* feat(cmapi): add read_only param for API add node endpoint
* style(cmapi): fixes for string length and quotes
Add dbroots of other nodes to the read-only node
On every node change adjust dbroots in the read-only nodes
Fix logging (trace level) in tests
* feat(cmapi): NetworkManager class for some ip hostname opoerations.
* fix(cmapi): Use NetworkManager class to resolve ip and hostname in node_manipulation.add_node function
* fix(cmapi): Minor docstring and formatting fixes
[add] distribute .secrets file to all nodes while adding a new node
[add] encrypt_password, generate_secrets_data, save_secrets to CEJPasswordHandler
[add] tools section to mcs cli tool
[add] mcs_cluster_tool/tools_commands.py file with cskeys and cspasswd commands
[add] cskeys and cspasswd commands to tools section of mcs cli
[mv] backup/restore commands to tools section mcs cli
[fix] minor imports ordering
[fix] constants
[add] cluster api client class
[fix] cli cluster_app using cluster api client
[add] ClusterAction Enum
[add] toggle_cluster_state function to reduce code duplication
