chore: remove built binary and prevent accidental addition again (#91)

Removes `main` from the repo and updates `.gitignore` to help prevent
accidents like this again. `.test` comes from go test binaries, which I
feel is also worth excluding

Signed-off-by: Jared Allard <jaredallard@users.noreply.github.com>

.gitignore

@@ -1,2 +1,6 @@
 .env
-*.rpm
+*.rpm
+
+# Go binaries and test artifacts
+main
+*.test