- Comment out mocha imports in various tests to prep for new test strategy
- Replace `before` with `beforeEach` and `after` with `afterEach` for consistency
- Remove deprecated `commandsBase.test.ts` and `dtm.test.ts` files to reflect focus on new functionality
- Added start line parameter to handleCodeSelected function.
- Updated all calls to handleCodeSelected to include the start line.
- The start line is now included in the context data for symbol references and definitions.
- Implemented CustomContexts class to handle custom contexts.
- Added methods to parse, get, and handle custom context commands.
- Created test cases for CustomContexts class in customContext.test.ts.
