Add slides for lecture 06 - I2C and USB

slides/lectures/fils_en/06/i2c/i2c_10bit_address_format.json

slides/lectures/fils_en/06/i2c/i2c_10bit_address_format.svg

...ctures/fils_en/06/i2c/i2c_10bit_address_transmission.json

...ectures/fils_en/06/i2c/i2c_10bit_address_transmission.svg

slides/lectures/fils_en/06/i2c/i2c_7bit_address_format.json

slides/lectures/fils_en/06/i2c/i2c_7bit_address_format.svg

...ectures/fils_en/06/i2c/i2c_7bit_address_transmission.json

...lectures/fils_en/06/i2c/i2c_7bit_address_transmission.svg

slides/lectures/fils_en/06/i2c/i2c_example.json

slides/lectures/fils_en/06/i2c/i2c_example.svg

slides/lectures/fils_en/06/i2c/i2c_network.svg

slides/lectures/fils_en/06/i2c/raspberry_pi_pico_pins.jpg

slides/lectures/fils_en/06/i2c/slides.md

slides/lectures/fils_en/06/sensors/analog_sensor.svg

slides/lectures/fils_en/06/sensors/bmp280_registers.png

slides/lectures/fils_en/06/sensors/bmp280_schematics.png

slides/lectures/fils_en/06/sensors/digital_sensor.svg

slides/lectures/fils_en/06/sensors/slides.md

slides/lectures/fils_en/06/sensors/spi_read_register.json

slides/lectures/fils_en/06/sensors/spi_read_register.svg