micropython: add micropython component

components/language/micropython/docs/zephyr/general.rst

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+.. _zephyr_general:
+
+General information about the Zephyr port
+=========================================
+
+The Zephyr Project is a Linux Foundation hosted Collaboration Project. It’s an open
+source collaborative effort uniting developers and users in building a
+small, scalable, real-time operating system (RTOS) optimized for resource-constrained
+devices, across multiple architectures.
+
+Multitude of boards
+-------------------
+
+There is a multitude of modules and boards from different sources that are supported
+by the Zephyr OS. All boards supported by Zephyr (with standard level of features
+support, like UART console) should work with MicroPython (but not all were tested).
+The FRDM-K64f board is taken as a reference board for the port for this documentation.
+If you have another board, please make sure you have a datasheet, schematics and other
+reference materials for your board handy to look up various aspects of your board
+functioning.
+
+For a full list of Zephyr supported boards click `here (external link) <https://docs.zephyrproject.org/latest/boards/index.html#boards>`_