FIX: remove special quotation marks from filename generation. (#1157)

* remove left|right point double angle quotation marks

* move to DefaultCodeGen and update TypeScriptAngularClientCodegen to reflect new clean function so that the filename AND imports are added correctly

* rename to a more accurate name :)

* shippable fixes

* shippable javadoc fix

* replaced cleanModelFilename with sanitzeName

* remove DefaultCodegen changes

Author: smasala

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -4702,5 +4702,6 @@ private void setParameterNullable(CodegenParameter parameter, CodegenProperty pr
      */
     public void postProcessFile(File file, String fileType) {
         LOGGER.debug("Post processing file {} ({})", file, fileType);
-    }
+    } 
+
 }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAngularClientCodegen.java

@@ -472,7 +472,7 @@ public String toApiImport(String name) {
 
     @Override
     public String toModelFilename(String name) {
-        return this.convertUsingFileNamingConvention(name) + modelFileSuffix;
+        return this.sanitizeName(this.convertUsingFileNamingConvention(name) + modelFileSuffix);
     }
 
     @Override