fix: update gitignore

fix: order of statements in makefile

fix: multiple files synth

docs: fix README header levels

docs: fix readme to use headings

feat: add MIT license

fix: set correct submakefile path

docs: add README to specify project purpose

feat: add basic template

Template for vhdl application that can be simulated using ghdl.
In xil folder, makefile for Xilinx toolchain can be found (from synthesis to upload to the device)