[PC-962] - Nicla Voice Motion Detection Tutorial (#1337)

* Initial commit

* Content update (tutorial introduction)

* Content update (IMU Data Capture with Edge Impulse)

* Content update (IMU data capture section)

* Content update (Impulse design section)

* Content update (Impulse Design section)

* Content update (IMU Data Capture)

* Content update (Impulse Design section)

* Content update (IMU Syntiant Block Configuration section)

* Content update (Classification Block Configuration section)

* Content update (Deploying and Running an Impulse section)

* Content update (Conclusion section)

* Content update (banner)

* Content update (linter fix)

* Content update (Edge Impulse name update)

* Content update (Marta's review)

Co-authored-by: martab1994 <93210545+martab1994@users.noreply.github.com>

* Content update (Marta's review)

Co-authored-by: martab1994 <93210545+martab1994@users.noreply.github.com>

* Content update (Marta's review)

Co-authored-by: martab1994 <93210545+martab1994@users.noreply.github.com>

* Content update (Marta's review)

* Content update (linter fix)

* Content update (Linter fix)

* Content update (title change)

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Co-authored-by: José Antonio Bagur Nájera <josea.bagur@gmail.com>
Co-authored-by: martab1994 <93210545+martab1994@users.noreply.github.com>

Author: 3 people