1. Applied the common completion `eDiskFileCompletion` to the first argument of the command `platform target-install`. 2. Added a related test case. Reviewed By: teemperor Differential Revision: https://reviews.llvm.org/D84179
1. Applied the common completion `eDiskFileCompletion` to the first argument of the command `platform target-install`. 2. Added a related test case. Reviewed By: teemperor Differential Revision: https://reviews.llvm.org/D84179