Change version to 2.1.2-eap.0

- I think it's better for MAJOR.MINOR.PATCH to be synchronized with main branch.
- the first three versions will change when business will change while `eap-x` will be increased when support for new Gateway releases is added

Author: fioan89

gradle.properties

@@ -3,7 +3,7 @@
 pluginGroup=com.coder.gateway
 pluginName=coder-gateway
 # SemVer format -> https://semver.org
-pluginVersion=3.0.0-eap
+pluginVersion=2.1.2-eap.0
 # See https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
 # for insight into build numbers and IntelliJ Platform versions.
 pluginSinceBuild=223.7571.70