chore: Add Coursier cache (#593)

Avoid download dependencies every time

Author: He-Pin

.github/workflows/pr-build.yaml

@@ -22,6 +22,8 @@ jobs:
           distribution: 'zulu'
           cache: sbt
       - uses: sbt/setup-sbt@v1
+      - name: Cache Coursier cache
+        uses: coursier/cache-action@bebeeb0e6f48ebad66d3783946588ecf43114433 # 6.4.8
       - name: Check Formatting
         run: ./mill _.${{ matrix.lang }}[_].__.checkFormat
       - name: Compile with mill

.jvmopts

@@ -1 +1,13 @@
 --enable-native-access=ALL-UNNAMED
+-XX:+UseG1GC
+-Xms4G
+-Xmx4G
+-Xss2M
+-XX:+AlwaysActAsServerClassMachine
+-XX:ReservedCodeCacheSize=512m
+-XX:NonProfiledCodeHeapSize=256m
+-XX:MaxGCPauseMillis=750
+-XX:+UseCompressedOops
+-XX:MetaspaceSize=512M
+-XX:-ClassUnloadingWithConcurrentMark
+-Djava.security.egd=file:/dev/./urandom

.mill-jvm-opts

@@ -0,0 +1,12 @@
+-XX:+UseG1GC
+-Xms4G
+-Xmx4G
+-Xss2M
+-XX:+AlwaysActAsServerClassMachine
+-XX:ReservedCodeCacheSize=512m
+-XX:NonProfiledCodeHeapSize=256m
+-XX:MaxGCPauseMillis=750
+-XX:+UseCompressedOops
+-XX:MetaspaceSize=512M
+-XX:-ClassUnloadingWithConcurrentMark
+-Djava.security.egd=file:/dev/./urandom