Compile wendy binaries on CI

[lispyclouds]

Currently the only way to build Wendy is manual compilation which is flawed for the reasons:

• GraalVM setup ceremony is long and complex
• Causes a loss of motivation in users to get started quickly
• Really long build times

Possible solutions:

• Make the CI build all binaries
• Make a single latest download link possible, then later go for releases following Bob's release cycle

[TimoKramer]

Using clj -Sdeps '{:deps {org.clojure/clojure {:mvn/version "1.10.2-rc1"}}}' -M:native-image
still emits

    at clojure.tools.analyzer.jvm$analyze_ns$fn__8256.invoke(jvm.clj:553)
	at clojure.lang.AFn.run(AFn.java:22)
	at java.lang.Thread.run(Thread.java:834)
	at com.oracle.svm.core.thread.JavaThreads.threadStartRoutine(JavaThreads.java:519)
	at com.oracle.svm.core.posix.thread.PosixJavaThreads.pthreadStartRoutine(PosixJavaThreads.java:192)
	at com.oracle.svm.core.code.IsolateEnterStub.PosixJavaThreads_pthreadStartRoutine_e1f4a8c0039f8337338252cd8734f63a79b5e3df(generated:0)
Error: com.oracle.graal.pointsto.constraints.UnresolvedElementException: Discovered unresolved type during parsing: clojure.tools.reader.reader_types$indexing_push_back_reader. To diagnose the issue you can use the --allow-incomplete-classpath option. The missing type is then reported at run time when it is accessed the first time.
Trace: 
	at parsing clojure.tools.analyzer.jvm$analyze_ns$fn__8258.invoke(jvm.clj:555)
Call path from entry point to clojure.tools.analyzer.jvm$analyze_ns$fn__8258.invoke(): 
	at clojure.tools.analyzer.jvm$analyze_ns$fn__8258.invoke(jvm.clj:553)
	at clojure.lang.AFn.run(AFn.java:22)
	at java.lang.Thread.run(Thread.java:834)
	at com.oracle.svm.core.thread.JavaThreads.threadStartRoutine(JavaThreads.java:519)
	at com.oracle.svm.core.posix.thread.PosixJavaThreads.pthreadStartRoutine(PosixJavaThreads.java:192)
	at com.oracle.svm.core.code.IsolateEnterStub.PosixJavaThreads_pthreadStartRoutine_e1f4a8c0039f8337338252cd8734f63a79b5e3df(generated:0)

Warning: Use -H:+ReportExceptionStackTraces to print stacktrace of underlying exception
Warning: Image 'wendy' is a fallback image that requires a JDK for execution (use --no-fallback to suppress fallback image generation and to print more detailed information why a fallback image was necessary).

[TimoKramer]

native-image compilation is fixed now