conda-create: add page (#6043)

pages/common/conda-create.md

@@ -0,0 +1,16 @@
+# conda create
+
+> Create new conda environments.
+> More information: <https://docs.conda.io/projects/conda/en/latest/commands/create.html>.
+
+- Create a new environment named `py39`, and install Python 3.9 and numpy v1.11 or above in it:
+
+`conda create --yes --name {{py39}} python={{3.9}} "{{numpy>=1.11}}"`
+
+- Make exact copy of an environment:
+
+`conda create --clone {{py39}} --name {{py39-copy}}`
+
+- Create a new environment with a specified name and install a given package:
+
+`conda create --name {{env_name}} {{package_name}}`