npm-find-dupes: add page (#14468)

* npm-find-dupes: add page

* Update npm-find-dupes.md

---------

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

pages/common/npm-find-dupes.md

@@ -0,0 +1,36 @@
+# npm find-dupes
+
+> Identify duplicate dependencies in `node_modules`.
+> More information: <https://docs.npmjs.com/cli/commands/npm-find-dupes>.
+
+- List all duplicate packages within `node_modules`:
+
+`npm find-dupes`
+
+- Include `devDependencies` in duplicate detection:
+
+`npm find-dupes --include=dev`
+
+- List all duplicate instances of a specific package in `node-modules`:
+
+`npm find-dupes {{package_name}}`
+
+- Exclude optional dependencies from duplicate detection:
+
+`npm find-dupes --omit=optional`
+
+- Set the logging level for output:
+
+`npm find-dupes --loglevel={{silent|error|warn|info|verbose}}`
+
+- Output duplicate information in JSON format:
+
+`npm find-dupes --json`
+
+- Limit duplicate search to specific scopes:
+
+`npm find-dupes --scope={{@scope1,@scope2}}`
+
+- Exclude specific scopes from duplicate detection:
+
+`npm find-dupes --omit-scope={{@scope1,@scope2}}`