Replication of original PR #98: feat: add support for workspace/symbol request

[yashwanthatla]

PR Summary

Add Workspace Symbol Request Support

Overview

This PR adds support for the workspace/symbol LSP request, allowing clients to find symbols across the workspace. The implementation includes new constants, methods, and comprehensive test coverage.

Change Types

Type	Description
Feature	Add workspace/symbol request support
Test	Add test cases for workspace symbol functionality

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Affected Modules

Module / File	Change Description
multilspy/lsp_protocol_handler/lsp_constants.py	Add LOCATION constant for symbol location
multilspy/language_server.py	Add request_workspace_symbol method to handle workspace symbol requests
multilspy/test_multilspy_rust.py	Add test case for workspace symbol functionality
multilspy/test_sync_multilspy_rust.py	Add test case for request_workspace_symbol functionality

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Notes for Reviewers

• The implementation follows the same pattern as existing request methods in the language server
• Test cases verify the expected behavior for specific symbols like "parse_or_run"