Introduce a diagnosis tool

[theofidry]

Introduce a way to diagnose a finder, i.e. get information about what a specific finder may find. Those are then aggregated and but run all by a diagnoser.

The idea of this tool is to provide a quick insight on how each finder will operator. For example on my machine:

$ make diagnose
./bin/diagnose.php
Running diagnosis...

CpuInfoFinder: 
--------------------------------------------
The file "/proc/cpuinfo" could not be found.
--------------------------------------------

DummyCpuCoreFinder(value=1): 
----------------
Will return "1".
----------------

HwLogicalFinder: 
---------------------------------------------------------------------------------
Executed the command "sysctl -n hw.logicalcpu 2>&1" and got the following output:
8

---------------------------------------------------------------------------------

HwPhysicalFinder: 
----------------------------------------------------------------------------------
Executed the command "sysctl -n hw.physicalcpu 2>&1" and got the following output:
8

----------------------------------------------------------------------------------

NProcFinder(all=true): 
----------------------------------------------------
The command "nproc --all" gave the following output:
8

----------------------------------------------------

NProcFinder(all=false): 
----------------------------------------------
The command "nproc" gave the following output:
8

----------------------------------------------

NullCpuCoreFinder: 
-------------------
Will return "null".
-------------------

WindowsWmicPhysicalFinder: 
--------------------------------------------------------------------------------------------------------------------------------------
Executed the command "wmic cpu get NumberOfProcessors 2>&1" which exited with a non-success exit code (127) with the following output:
sh: wmic: command not found

--------------------------------------------------------------------------------------------------------------------------------------

WindowsWmicLogicalFinder: 
---------------------------------------------------------------------------------------------------------------------------------------------
Executed the command "wmic cpu get NumberOfLogicalProcessors 2>&1" which exited with a non-success exit code (127) with the following output:
sh: wmic: command not found

---------------------------------------------------------------------------------------------------------------------------------------------

It also allows to execute each finders:

$ make execute
./bin/execute.php
Executing finders...

CpuInfoFinder: NULL
DummyCpuCoreFinder(value=1): 1
HwLogicalFinder: 8
HwPhysicalFinder: 8
NProcFinder(all=true): 8
NProcFinder(all=false): 8
NullCpuCoreFinder: NULL
WindowsWmicPhysicalFinder: NULL
WindowsWmicLogicalFinder: NULL

With this, it should be easy to test it on a specific system.