Summary:
This patch adds a new `DynamicLoaderDumpWithModuleList` plugin which can be used for coredump debugging.
It leverages NT_FILE note in coredump to get module list instead of relying on posix rdebug data structure which highly depends on having a matching main executable available. Once the module list is generated a ObjectFilePlaceholder is created for each module.

This feature is only activated by both two conditions are true:
* `use-module-list-dyld` setting is true (false by default)
* coredump having `NT_FILE` notes

Per my testing, Meta's modern Linux kernel seems to always generate `NT_FILE` note so this should be very useful.

With this patch, Meta's internal coredump can be changed from
```
lldb <path_to_main_executable> -c <path_to_coredump>
```
to
```
lldb -c <path_to_coredump>
```

Further diffs involving:
* New `target module replace` command to upgrade PlaceHolder module to real module
* Coredumper side change to generate fbpkg/rpm metadata so that `auto_debuginfo.py` can automatically locate debug info (in review)
* Implement `auto_debuginfo` to parse coredumper metadata to download fbpkg, unzip it, automatically run `target module replace` to upgrade all Placeholder modules into real modules.

I am landing this feature internally first because:
* Unblock the further work listed above
* Early beta testing from our users to get feedback and dogfooding.
* Quick turnover from open source code review

Once we got solid feedback, I will bring this to open source.

Test Plan:
* Added new unit test
* c4crasher end-to-end debugging

Reviewers: wanyi, hyubo, #lldb_team

Reviewed By: wanyi

Subscribers: jimmymalone, frd, #lldb_team

Differential Revision: https://phabricator.intern.facebook.com/D44558615