@W-20893605 Add eCDN CLI commands and SDK client (#58)

* ecdn wip

* waf and secutiry

* mrt-rules, etc

* docs

* tests

* typo

* Update changeset for eCDN feature

* update tests to use new pattern

Author: clavery

.changeset/sour-months-post.md

@@ -3,4 +3,4 @@
 '@salesforce/b2c-tooling-sdk': minor
 ---
 
-adds package.json config source for project level shared config
+Add `b2c ecdn` commands for managing eCDN zones, certificates, WAF, caching, security settings, and related configurations.

docs/.vitepress/config.mts

@@ -35,6 +35,7 @@ const guideSidebar = [
       { text: 'WebDAV Commands', link: '/cli/webdav' },
       { text: 'ODS Commands', link: '/cli/ods' },
       { text: 'MRT Commands', link: '/cli/mrt' },
+      { text: 'eCDN Commands', link: '/cli/ecdn' },
       { text: 'SLAS Commands', link: '/cli/slas' },
       { text: 'Custom APIs', link: '/cli/custom-apis' },
       { text: 'SCAPI Schemas', link: '/cli/scapi-schemas' },