gateware/e1-tracer: Initial import

This is the project specific to the e1-tracer board that was
initially based on the iCEpick with a couple dev boards attached
but eventually consolidated to a proper board, which still retaining
100% electrical compatibility (and thus same gateware and firmware)

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/gateware/e1-tracer/.gitignore b/gateware/e1-tracer/.gitignore
new file mode 100644
index 0000000..24d1c97
--- /dev/null
+++ b/gateware/e1-tracer/.gitignore
@@ -0,0 +1,4 @@
+build-tmp
+__pycache__
+*.vcd
+.*.swp