Decoupling specific code from generic code

[coder137]

• BaseTarget
  • Update Target generic and Target custom
• BaseToolchain
  • Create Toolchain_generic and Toolchain_custom
  • Args and Register module depend on specialized_toolchains

[coder137]

#209 Toolchain generic and Toolchain custom implementation

[coder137]

#210 Args depends on Toolchain specialized