[CLI] Introduce utilities for creating FirSession hierarchy in CLI for all platforms

Also support session creation and compilation for HMPP projects

^KT-56209 Fixed

compiler/testData/cli/js/successfulHmpp.args

@@ -0,0 +1,15 @@
+$TESTDATA_DIR$/../jvm/hmpp/src/a.kt
+$TESTDATA_DIR$/../jvm/hmpp/src/b.kt
+$TESTDATA_DIR$/../jvm/hmpp/src/c.kt
+-ir-output-dir
+$TEMP_DIR$/out.js
+-ir-output-name
+fir-hmpp
+-language-version
+2.0
+-XXLanguage\:+MultiPlatformProjects
+-Xmodule=a;$TESTDATA_DIR$/../jvm/hmpp/src/a.kt
+-Xmodule=b;$TESTDATA_DIR$/../jvm/hmpp/src/b.kt
+-Xmodule=c;$TESTDATA_DIR$/../jvm/hmpp/src/c.kt
+-XdependsOn=b\:a
+-XdependsOn=c\:b

compiler/testData/cli/js/successfulHmpp.out

@@ -0,0 +1,11 @@
+warning: ATTENTION!
+This build uses unsafe internal compiler arguments:
+
+-XXLanguage:+MultiPlatformProjects
+
+This mode is not recommended for production use,
+as no stability/compatibility guarantees are given on
+compiler or generated code. Use it at your own risk!
+
+warning: language version 2.0 is experimental, there are no backwards compatibility guarantees for new language and library features
+OK