[lldb/Plugins] Add memory writing capabilities to Scripted Process

This patch adds memory writing capabilities to the Scripted Process plugin.

This allows to user to get a target address and a memory buffer on the
python scripted process implementation that the user can make processing
on before performing the actual write.

This will also be used to write trap instruction to a real process
memory to set a breakpoint.

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

lldb/source/Plugins/ScriptInterpreter/Python/ScriptedProcessPythonInterface.h

@@ -49,7 +49,9 @@ public:
 
   lldb::DataExtractorSP ReadMemoryAtAddress(lldb::addr_t address, size_t size,
                                             Status &error) override;
-                                         
+
+  size_t WriteMemoryAtAddress(lldb::addr_t addr, lldb::DataExtractorSP data_sp,
+                              Status &error) override;
 
   StructuredData::ArraySP GetLoadedImages() override;