rm gcovr dep implement json html report

[brianignacio5]

Description

Remove gcovr use in the extension in favor of implementing our own JSON and HTML report from toolchain gcov executables.

Type of change

• New feature (non-breaking change which adds functionality)

Steps to test this pull request

Provide a list of steps to test changes in this PR and required output

1. Follow the code coverage tutorial or code coverage documentation.
2. Observe results. After executing the ESP-IDF: Add Editor Coverage and ESP-IDF: Get HTML Coverage Report for Project should provide similar results.

How has this been tested?

Manual testing following code coverage tutorial.

Test Configuration:

• ESP-IDF Version: 5.0
• OS (Windows,Linux and macOS): macOS

Checklist

• PR Self Reviewed
• Applied Code formatting
• Added Documentation
• Added Unit Test
• Verified on all platforms - Windows,Linux and macOS

[github-actions]

Download the artifacts for this pull request:

• esp-idf-extension.vsix.zip
• esp-idf-extension-open.vsix.zip

[radurentea]

LGTM from a coding perspective.

However, I have the following suggestions for the design:

1. The black font on the red background in the HTML Report is quite hard too see:
   

2. For the columns that don't have values we should leave them empty or put "0%" instead of "-%"
   

3. I think this is a bug, in old HTML Report the map value was "low: <75.0 %" instead of "low: >= 0%"
   
   

4. We should update the screenshots as well for the gcov documentation

[radurentea]

LGTM

[AndriiFilippov]

@brianignacio5 hi !

Tested:
OS - MacOS
ESP-IDF: v5.1.2

LGTM 👍
Since you have updated Report, do you think code coverage tutorial be also updated ? I mean like illustration.

[brianignacio5]

@brianignacio5 hi !

Tested: OS - MacOS ESP-IDF: v5.1.2

LGTM 👍 Since you have updated Report, do you think code coverage tutorial be also updated ? I mean like illustration.

Updated the HTML report picture and removed gcovr from docs

[AndriiFilippov]

LGTM 👍