Refactor configurations handling:

- rearrange compile call parameters for clarity, more defaults
- remove baseConfiguration method - it is now covered by defaultConfiguration
for static part, and refineConfiguration call if a config parameter is
specified
- implement proper configurations chaining, documented in comment to compile function
- minor renamings and refactorings

libraries/scripting/common/src/kotlin/script/experimental/basic/basicScript.kt

@@ -12,9 +12,6 @@ class PassThroughCompilationConfigurator(val environment: ScriptingEnvironment)
 
     override val defaultConfiguration = ScriptCompileConfiguration(environment)
 
-    override suspend fun baseConfiguration(scriptSource: ScriptSource): ResultWithDiagnostics<ScriptCompileConfiguration> =
-        defaultConfiguration.asSuccess()
-
     override suspend fun refineConfiguration(
         script: ScriptSource,
         configuration: ScriptCompileConfiguration,