bru: add page (#12203)

* bru: add page

---------

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

pages/common/bru.md

@@ -0,0 +1,28 @@
+# bru
+
+> CLI for Bruno, an Opensource IDE for exploring and testing APIs.
+> More information: <https://docs.usebruno.com/cli/overview.html>.
+
+- Run all request files from the current directory:
+
+`bru run`
+
+- Run a single request from the current directory by specifying its filename:
+
+`bru run {{file.bru}}`
+
+- Run requests using an environment:
+
+`bru run --env {{environment_name}}`
+
+- Run requests using an environment with a variable:
+
+`bru run --env {{environment_name}} --env-var {{variable_name}}={{variable_value}}`
+
+- Run request and collect the results in an output file:
+
+`bru run --output {{path/to/output.json}}`
+
+- Display help:
+
+`bru run --help`