Testbench setting for injector (without AHB interface) has been completed. Also, some documentation files and a Makefile have been restored due to a wrong git execution (tried to revert a commit to rectify a message, ended with some files deleted, gl I have multiple folders of the project when I do commits).

The debugging of the testbench has allowed to learn better how it communicates with the interface over the BM bus. This information has been documented at 'Transaction_manual.txt' on doc's folder. It still requires a bit of work, and also tweak the injector so the RST control flag also resets the FIFO, if the team thinks that it should do it.

Since the size bus of the BM buses from read_if_bmo and write_if_bmo are already -1 in value respect the internal curr_size, they have been modified to match busses width of bm_out, which sends to the AHB interface the control information to make the transfer. This is a simpler modification to reduce complexity and does not represent any change at injecting performance.

Types, functions and internal connections have been remade to drop the dependency with Gaisler libraries. The project passes Spyglass, Vivado compilations and Questa simulation. However, now there is two top levels, the AHB interface (that contains nothing, because the AHB interface used is from an external library) and an SELENE/platform interface to translate from our types and connections to the platform's.

All components intrinsic to the injector have been revised to drop the dependency of the grlib library (types, functions and component instation). However, now there must be a wrapper AHB interface for the target platform, as the 'injector_ahb_SELENE.vhd' for the Selene platform, which requires libraries from both the BSC and target platform.

The repeat feature that uses the count field of the descriptor wasn't working on descriptors that used the feature if the one before also used it. Now it should work no matter the type of descriptor are programmed.

add placeholders on recipes and generic scripts.

See merge request !1

Scripts need to be changed with final paths and files