Refactor TypecheckingService and cache. Enable to use cache w/o tracking.

TypecheckingService has become too overloaded with responsibilities, and
so Strategy class is introduced to extract strategies to.
Cache holder can also be non-tracking, which comes in handy when
implementing purely caching typechecking, not anticipating any change.

build.xml

@@ -1521,6 +1521,7 @@
           <module ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)" kind="cl" />
           <module ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)" kind="cl" />
           <module ref="f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)" kind="cl" />
+          <module ref="f97d84b2-8bad-4fdd-8ede-da17b3eacf4c(jetbrains.mps.coderules)" kind="cl" />
           <module ref="f113d56b-63e3-4120-a89c-2f5dcb8c6290(jetbrains.mps.coderules.runtime)" kind="cl" />
           <module ref="6998f568-f0e9-473b-b4a8-9efb6499fc8d(jetbrains.mps.coderules.typechecking)" kind="cl" />
           <module ref="f9bad4b1-59da-4f20-8feb-9f4cc4ad872e(jetbrains.mps.coderules.typechecking.testlang.sandbox)" kind="cl" />

coderules/solutions/jetbrains.mps.coderules.build/models/jetbrains.mps.coderules.build.mps

@@ -1742,6 +1742,11 @@
             <ref role="3bR37D" to="ffeo:7Kfy9QB6Lc2" resolve="jetbrains.mps.lang.typesystem" />
           </node>
         </node>
+        <node concept="1SiIV0" id="61G6TdCC7yR" role="3bR37C">
+          <node concept="3bR9La" id="61G6TdCC7yS" role="1SiIV1">
+            <ref role="3bR37D" node="NKt6yn9_8p" resolve="jetbrains.mps.coderules" />
+          </node>
+        </node>
       </node>
     </node>
     <node concept="2G$12M" id="78H58oeeFzd" role="3989C9">