feat(examples): improve example configuration

[finger563]

Description

• Update all peripheral examples to use espp::I2c class for cleaner / more reusable code
• Update all peripheral examples to have a Kconfig.projbuild file for configuring the i2c pins - with default hardware selecting relevant targets for the example as well as CUSTOM hardware config to configure your own i2c pins on your hardware

Motivation and Context

Simplifies the example code to make it more readable and configurable using menuconfig for targeting other hardware. Also helps make it clearer what hardware is supported by default by the example while providing code-free mechanisms for running on other hardware.

How has this been tested?

Building the examples (using this PR's GH action)

Screenshots (if appropriate, e.g. schematic, board, console logs, lab pictures):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Hardware (schematic, board, system design) change
• Software change

Checklist:

• My change requires a change to the documentation.
• I have added / updated the documentation related to this change via either README or WIKI

Software

• I have added tests to cover my changes.
• I have updated the .github/workflows/build.yml file to add my new test to the automated cloud build github action.
• All new and existing tests passed.
• My code follows the code style of this project.

[github-actions]

✅Static analysis result - no issues found! ✅