Extract preBuild.sh (#4)

Co-authored-by: Alexey Tsvetkov <alexey.tsvetkov@jetbrains.com>

build.sh

 #!/bin/bash
 
-if [ ! -d ./skija ]; then
- git clone https://github.com/JetBrains/skija.git
-  pushd ./skija
-else
- pushd ./skija && git pull
-fi
-git checkout 82b8c697643ae8f2d6a315c27bd47601533b0397
-popd
-
-SEP=:
-if [ ! -z `uname | grep MINGW` ]; then
-  SEP=\;
-fi
-
-java -jar ./libs/lombok.jar delombok skija/src/main/java -d skiko/src/jvmMain/java \
-   --classpath=./libs/annotations-19.0.0.jar${SEP}./libs/lombok.jar
-
+./preBuild.sh
 cd skiko && ./gradlew publishToMavenLocal

preBuild.sh

+#!/bin/bash
+
+if [ ! -d ./skija ]; then
+  git clone https://github.com/JetBrains/skija.git
+  pushd ./skija
+else
+  pushd ./skija && git pull
+fi
+git checkout 82b8c697643ae8f2d6a315c27bd47601533b0397
+popd
+
+SEP=:
+if [ ! -z `uname | grep MINGW` ]; then
+  SEP=\;
+fi
+
+java -jar ./libs/lombok.jar delombok skija/src/main/java -d skiko/src/jvmMain/java \
+   --classpath=./libs/annotations-19.0.0.jar${SEP}./libs/lombok.jar
\ No newline at end of file