feat(triggers): allow complex expressions, add caching for performance

[andrewazores]

• allow single-quoted durations
• allow complex cel conditions
• cache generated scripts
• more refactoring, use singleton scripthost

Based on #220

diff --git a/smoketest.sh b/smoketest.sh
index 187c5a7e..e2cfebbe 100755
--- a/smoketest.sh
+++ b/smoketest.sh
@@ -202,7 +202,7 @@ runDemoApps() {
     podman run \
         --name quarkus-test-agent-1 \
         --pod cryostat-pod \
-        --env JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -Dcom.sun.management.jmxremote.port=9097 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -javaagent:/deployments/app/cryostat-agent.jar" \
+        --env JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -Dcom.sun.management.jmxremote.port=9097 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -javaagent:/deployments/app/cryostat-agent.jar=[ThreadCount>0]~default.jfc,[ThreadCount>0;TargetDuration>duration(\"30s\")]~Profiling" \
         --env QUARKUS_HTTP_PORT=10010 \
         --env ORG_ACME_CRYOSTATSERVICE_ENABLED="false" \
         --env CRYOSTAT_AGENT_APP_NAME="quarkus-test-agent-1" \
@@ -214,14 +214,16 @@ runDemoApps() {
         --env CRYOSTAT_AGENT_BASEURI="${protocol}://localhost:${webPort}/" \
         --env CRYOSTAT_AGENT_TRUST_ALL="true" \
         --env CRYOSTAT_AGENT_AUTHORIZATION="Basic $(echo user:pass | base64)" \
+        --env CRYOSTAT_AGENT_API_WRITES_ENABLED="true" \
         --env CRYOSTAT_AGENT_HARVESTER_PERIOD_MS=60000 \
         --env CRYOSTAT_AGENT_HARVESTER_MAX_FILES=10 \
+        --env CRYOSTAT_AGENT_SMART_TRIGGER_DEFINITIONS="[(ProcessCpuLoad>=0.0||SystemCpuLoad>=0.0)&&HeapMemoryUsagePercent>=0.0;TargetDuration>duration('40s')]~default.jfc" \
         --rm -d quay.io/andrewazores/quarkus-test:latest
 
     podman run \
         --name quarkus-test-agent-2 \
         --pod cryostat-pod \
-        --env JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -javaagent:/deployments/app/cryostat-agent.jar" \
+        --env JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -javaagent:/deployments/app/cryostat-agent.jar=[ThreadCount>0;TargetDuration>duration(\"2m\")]~Profiling" \
         --env QUARKUS_HTTP_PORT=10011 \
         --env ORG_ACME_CRYOSTATSERVICE_ENABLED="false" \
         --env CRYOSTAT_AGENT_APP_NAME="quarkus-test-agent-2" \
@@ -234,6 +236,8 @@ runDemoApps() {
         --env CRYOSTAT_AGENT_TRUST_ALL="true" \
         --env CRYOSTAT_AGENT_AUTHORIZATION="Basic $(echo user:pass | base64)" \
         --env CRYOSTAT_AGENT_API_WRITES_ENABLED="true" \
+        --env CRYOSTAT_AGENT_HARVESTER_TEMPLATE="default" \
+        --env CRYOSTAT_AGENT_SMART_TRIGGER_EVALUATION_PERIOD_MS=10000 \
         --rm -d quay.io/andrewazores/quarkus-test:latest
 
     # copy a jboss-client.jar into /clientlib first