Updating CLI11 symlinks to include CLI11-2.0.0
Updating CLI11 symlinks to include CLI11-2.0.0

Summary:
Implements step 13 of ["Adding a new version of an existing project"](https://www.internalfb.com/intern/wiki/Third_Party2/Usage/#adding-a-new-version-of)

Steps are:
1. Update `fbcode://third-party2/config.py` to use the new CLI11-2.0.0 version
2. `fbcode $> tp2_update_fbcode CLI11` (updated third-party2 symlink)
3. `fbcode $> tp2_config buckify CLI11` (updated symlink to third-party-buck)
4. `fbcode $> buckify_tp2` (added TARGETS & other metadata files to third-party-buck)

Differential Revision: D30286158

fbshipit-source-id: 2a0bd5c92f9022eda2ae3f24b757fd2120bfcd4d

facebook/wangle,facebook/wangle,facebook/wangle