Create CI Pipeline

.gitlab-ci.yml

+image: "FROM r.lcr.gr/microhacks/bevy-builder"
+
+build-linux:
+  stage: build
+  cache:
+    key:
+      files:
+        - Cargo.lock
+    paths:
+      - target
+  script:
+    - cargo build --release
+    - strip target/release/crunch
+  artifacts:
+    name: crunch.linux.x86
+    paths:
+      - target/release/crunch
+    expire_in: 1 day
+  only:
+    - trunk
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