op: add page (#10717)

* op: add page

---------

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/common/op.md

@@ -0,0 +1,36 @@
+# op
+
+> Official CLI for 1Password's desktop app.
+> More information: <https://developer.1password.com/docs/cli/reference>.
+
+- Sign in to a 1Password account:
+
+`op signin`
+
+- List all vaults:
+
+`op vault list`
+
+- Print item details in JSON format:
+
+`op item get {{item_name}} --format json`
+
+- Create a new item with a category in the default vault:
+
+`op item create --category {{category_name}}`
+
+- Print a referenced secret to `stdout`:
+
+`op read {{secret_reference}}`
+
+- Pass secret references from exported environment variables to a command:
+
+`op run -- {{command}}`
+
+- Pass secret references from an environment file to a command:
+
+`op run --env-file {{path/to/env_file.env}} -- {{command}}`
+
+- Read secret references from a file and save plaintext secrets to a file:
+
+`op inject --in-file {{path/to/input_file}} --out-file {{path/to/output_file}}`