pio-project: add page (#5408)

pages/common/pio-project.md

@@ -0,0 +1,24 @@
+# pio project
+
+> Tool to manage PlatformIO projects.
+> More information: <https://docs.platformio.org/en/latest/core/userguide/project/index.html>.
+
+- Initialize a new PlatformIO project:
+
+`pio project init`
+
+- Initialize a new PlatformIO project in a specific direcdory:
+
+`pio project init --project-dir {{path/to/project_directory}}`
+
+- Initialize a new PlatformIO project, specifying a board ID:
+
+`pio project init --board {{ATmega328P|uno|...}}`
+
+- Initialize a new PlatformIO based project, specifying one or more project options:
+
+`pio project init --project-option="{{option}}={{value}}" --project-option="{{option}}={{value}}"`
+
+- Print the configuration of a project:
+
+`pio project config`