Add ecc database and conversion toolset v1.

Test: Manually
Bug: 111674784

Change-Id: I94b9b95b014958d90ee1251fcd872c227f450a82
diff --git a/ecc/.gitignore b/ecc/.gitignore
new file mode 100644
index 0000000..fbf10af
--- /dev/null
+++ b/ecc/.gitignore
@@ -0,0 +1 @@
+.intermediate