Work around for VSC Bug - Fix Path Mappings to lowercase the drive letter

[DonJayamanne]

When using path mappings on windows, ensure the drive letter is lower cased.
I.e. when user uses the following setup, ${workspaceFolder} gets translated to a path with an upper case drive letter.

      "pathMappings": [
        {
          "localRoot": "${workspaceFolder}/modules/rfidreader/",
          "remoteRoot": "/app/"
        }
      ],

This is a work around for a VSC bug

[DonJayamanne]

Prescribed Solution:

• Modify the provideAttachDefaults method of src/client/debugger/extension/configuration/resolvers/attach.ts file:
  • To take the localRoot of path mappings and convert drive letter to lower case (on windows)