feat: Add CI for tracking size deltas using new action

[finger563]

Description

• Add the new esp-cpp/esp-idf-size-delta action to the build step
• Refactor build.yml to have cleaner comments about what to update
• Add idf_size_release.yml for releases

Motivation and Context

Helps provide projects an easy, already-configured way to track how code changes are affecting their flash and ram usage between PRs and releases.

How has this been tested?

• Checking that the build step still works on this PR
• Checking that the summary shows properly in the action
• Checking that the summary shows in a comment on this PR (and is updated by each run appropriately)

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.

[Copilot]

Pull Request Overview

This PR adds CI workflows for tracking ESP-IDF binary size changes using a new GitHub action. The implementation provides automated size delta tracking for both pull requests and releases to help monitor application size changes over time.

• Added workflow for PR-based size tracking with automated comments
• Added workflow for release-based size tracking with manual trigger option
• Configured workflows for ESP-IDF v5.5 with customizable project parameters

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.github/workflows/idf_size_pr.yml	PR workflow for automated size delta tracking on pull requests
.github/workflows/idf_size_release.yml	Release workflow with tag comparison and manual dispatch triggers

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[github-actions]

✅Static analysis result - no issues found! ✅

[github-actions]

ESP-IDF Size Report for 'Template'

Metric	Base	PR	Delta
FLASH	361,362 bytes (24.09%)	361,362 bytes (24.09%)	0 bytes (0.00%)
DRAM	15,672 bytes (8.67%)	15,672 bytes (8.67%)	0 bytes (0.00%)
IRAM	53,207 bytes (40.59%)	53,207 bytes (40.59%)	0 bytes (0.00%)
RAM (DRAM+IRAM)	68,879 bytes	68,879 bytes	0 bytes (0.00%)

_{FLASH uses app .bin size or json2 flash sum. RAM sums DRAM+IRAM via idf_size. Percentages shown when totals are available.
This report was generated by esp-idf-size-delta.}

[Copilot]

Pull Request Overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

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