conda-env: add page (#17755)

Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>
Co-authored-by: Dylan <145150333+dmmqz@users.noreply.github.com>

pages/common/conda-env.md

@@ -0,0 +1,32 @@
+# conda env
+
+> Manage conda environments.
+> More information: <https://docs.conda.io/projects/conda/en/latest/commands/env/index.html>.
+
+- Create an environment from an environment file (YAML, TXT, etc.):
+
+`conda env create {{[-f|--file]}} {{path/to/file}}`
+
+- Delete an environment and everything in it:
+
+`conda env remove {{[-n|--name]}} {{environment_name}}`
+
+- Update an environment based on an environment file:
+
+`conda env update {{[-f|--file]}} {{path/to/file}} --prune`
+
+- List all environments:
+
+`conda env list`
+
+- View environment details:
+
+`conda env export`
+
+- List environment variables:
+
+`conda env config vars list`
+
+- Set environment variables:
+
+`conda env config vars set {{my_var}}={{value}}`