Add no-default-case rule to disallow default cases in switch statements

[tupe12334]

This pull request introduces a new ESLint rule, no-default-case, which enforces the absence of default cases in switch statements. This is particularly useful for codebases that rely on exhaustive case handling, such as those using TypeScript's exhaustiveness checks. The rule is configurable to optionally allow empty default cases. The change includes documentation, tests, and integration into the plugin's recommended configuration.

New Rule Addition:

• Added src/rules/no-default-case.js to disallow default cases in switch statements, with an option to allow empty default cases.

Documentation Updates:

• Created docs/rules/no-default-case.md to describe usage, options, and rationale for the new rule.
• Updated README.md to list no-default-case under "Possible Errors" rules.

Configuration Changes:

• Enabled switch-case/no-default-case in the plugin's recommended configuration in src/index.js.

Testing:

• Added comprehensive tests for no-default-case in tests/src/rules/no-default-case.js, covering valid and invalid scenarios, including the allowEmpty option.