conda-list: add page (#18148)

Co-authored-by: Dylan <145150333+dmmqz@users.noreply.github.com>

pages/common/conda-list.md

@@ -0,0 +1,24 @@
+# conda list
+
+> List installed packages in a conda environment.
+> More information: <https://docs.conda.io/projects/conda/en/stable/commands/list.html>.
+
+- List all packages in the current environment:
+
+`conda list`
+
+- List packages in the named environment:
+
+`conda list {{[-n|--name]}} {{environment}}`
+
+- List packages installed in a given path:
+
+`conda list {{[-p|--prefix]}} {{path/to/environment}}`
+
+- Filter installed packages using `regex`:
+
+`conda list {{regex}}`
+
+- Save packages for future use:
+
+`conda list {{[-e|--export]}} > {{path/to/package-list.txt}}`