pm: use fixed-sized buf + scoped lock (gcc 8.3 compat)

pm: Only register privileged processes with FS as needed

pm: Use non-system event for process tracking.

pm: update for libstratosphere refactor

Fix ProcesState enum field names

pm: Support for 6.0.0

Add and fix copyright notices for better GPL compliance (thanks @naehrwert and @CTCaer).

pm: remove magic flag/event numbers to improve readability and understandability

stratosphere: Use RAII for locks ...

This renames the Mutex class member functions so that the mutex types
satisfy Lockable.

This makes them usable with standard std::scoped_lock
and std::unique_lock, which lets us use RAII and avoids the need
for a custom RAII wrapper :)

Modernize C++ usage (#144) ...

* Stratosphere: Use modern C++ idioms in some places

* algorithms like std::for_each are used instead of raw loops

* Stratosphere: Replace more raw loops with algorithms

* Stratosphere: Add a utility predicate function to test for equality with a reference element

This can be used to rewrite some common raw loops using algorithms instead

* fs.mitm: Use variant

* fs.mitm: Use enum class

* fs.mitm: Turn RomFSSourceInfo::Cleanup into a destructor

This obsoletes the need for a custom deleter in other places

* fs.mitm: Use enum class some more

* fs.mitm: Use unique_ptr

* fs.mitm: Simplify initialization

* Stratosphere: Simplify initialization

* fs.mitm: Use unique_ptr (fix memory leak along the way)

The previous code was using "delete" rather than "delete[]"

* fs.mitm: Use vector::emplace_back rather than push_back

emplace_back constructs elements in-place, hence avoiding a redundant element copy.

* Stratosphere: Replace more raw loops with algorithms

* Stratosphere: Use unique_ptr

* fs.mitm: Replace more raw loops with algorithms

* Stratosphere: Prefer move-construction over copy-construction when moving sink parameters around

PM: Fix remaining issues, now works properly again.

Make PM Compile. Note: Currently broken.

PM: Fix missing flags set/missing wait. Now works on 5.x.

ProcessManager: Fully implement pm:dmnt. Remove debug logging.

ProcessManager: Refactor resource limits, complete pm:shell.

ProcessManager: Fix Synchronization. Now works on 1.0.0 hardware.

ProcessManager: Fix svcCreateEvent handle inversion bug, and others. ...

NOTE: Debugging logs have been left in, and will be cleaned up once PM
is working.

ProcessManager: Implement almost all of pm:shell

Process Manager: Make process flag updating version agnostic, handle 5.x dead process semantics.

ProcessManager: Make launch flag parsing version agnostic.

ProcessManager: Implement core process management logic.