Add linters in images repository

[Kaniska244]

Description of changes: As part of this PR adding linters for the following type of files.

• Bash shell scripts excluding the test scripts.
• Dockerfile syntaxes using hadolint
• The source javascript files in build/src location used by the build/vscdc component.
• JSON files with JSON and JSONC syntaxes

Changelog: The following files are changed.

• Added a new workflow for code linter process
• Added linter configuration files under .github/linters location.

Checklist:

• All checks are passed.

[Copilot]

Pull request overview

This PR adds automated code linting infrastructure to the repository using GitHub Actions and super-linter. The linting covers Bash scripts, JavaScript files, JSON/JSONC files, and Dockerfiles across the repository, with test scripts specifically excluded from linting.

Changes:

• New GitHub Actions workflow for automated code linting on push to main and pull requests
• ESLint configuration for JavaScript and JSON/JSONC files with specific rules for build scripts
• ShellCheck configuration for Bash script validation with error-level severity
• Hadolint configuration for Dockerfile linting with specific rule exceptions

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.

File	Description
.github/workflows/code-linter.yml	Adds workflow using super-linter to validate Bash, JavaScript, JSON, and Dockerfiles on main branch pushes and PRs
.github/linters/eslint.config.mjs	ESLint flat config with rules for JavaScript files and JSON/JSONC parsing, including exceptions for specific build scripts
.github/linters/.shellcheckrc	ShellCheck config setting Bash mode, error-only severity, and disabling SC1101/SC1102
.github/linters/.hadolint.yaml	Hadolint config with error threshold and ignored rules for Docker best practices

Comments suppressed due to low confidence (1)

.github/linters/eslint.config.mjs:9

• Remove the defineConfig() wrapper from the export statement. ESLint flat config does not use a defineConfig function. The export should be export default [...] instead of export default defineConfig([...]).

export default defineConfig([