Hello. Could you display step by step how to implement a complete CI$/$CD pipeline for a simple javascript calculator that has has only $+$ and $-$ functions? For source control could you use Github as an example? These would be the requirements I am looking for:

CI Foundation

$*$Proper source control practices

$*$Build automation setup

$*$Unit testing with code coverage

$*$Static code analysis implementation

Pipeline Development

$*$Multi$-$stage YAML pipeline implementation

$*$Artefact management configuration

$*$Build and deployment triggers setup

$*$Proper approval gates configuration

Testing Implementation

$*$Security testing integration

$*$Performance testing setup

$*$Selenium UAT test implementation

$*$Test execution in pipeline

$*$Results reporting

Environment Management

$*$Minimum two environment setup $($Test$/$Prod$)$

$*$Environment$-$specific deployment configurations

$*$Successful deployment across environments