fix: CTest Test Suite Delimiter prevents running all tests (#4092)

* Introduces type alias (DriverMapT) to factorize type declaration
* Introduces the getProjectDriver method
* Adds comments
* Adds entry in the CHANGELOG

CHANGELOG.md

@@ -15,6 +15,7 @@ Improvements:
 
 Bug Fixes:
 
+- Fix issue where setting test suite delimiter prevent execution of all tests. [#4092](https://github.com/microsoft/vscode-cmake-tools/issues/4092)
 - Fix our setting of `isUserPreset` for presets, only set it to `true` if it's defined in a user presets file. [#4059](https://github.com/microsoft/vscode-cmake-tools/issues/4059)
 - Fix issue where duplicate presets are being listed in dropdown. [#4104](https://github.com/microsoft/vscode-cmake-tools/issues/4104)
 - Fix various GCC compiler errors and GCC linker errors not showing up in Problems View [#2864](https://github.com/microsoft/vscode-cmake-tools/issues/2864)