Add postfix completion support (#2746)

* Add postfix completion support
* Change the default value to true

Signed-off-by: sheche <[email protected]>

Author: jdneo

README.md

@@ -203,16 +203,15 @@ The following settings are supported:
 * `java.configuration.workspaceCacheLimit` : The number of days (if enabled) to keep unused workspace cache data. Beyond this limit, cached workspace data may be removed.
 * `java.import.generatesMetadataFilesAtProjectRoot` : Specify whether the project metadata files(.project, .classpath, .factorypath, .settings/) will be generated at the project root. Defaults to `false`.
 * `java.inlayHints.parameterNames.enabled`: Enable/disable inlay hints for parameter names. Supported values are: `none`(disable parameter name hints), `literals`(Enable parameter name hints only for literal arguments) and `all`(Enable parameter name hints for literal and non-literal arguments). Defaults to `literals`.
-
-New in 1.10.0
+* `java.compile.nullAnalysis.nonnull`: Specify the Nonnull annotation types to be used for null analysis. If more than one annotation is specified, then the topmost annotation will be used first if it exists in your project dependencies.
+* `java.compile.nullAnalysis.nullable`: Specify the Nullable annotation types to be used for null analysis. If more than one annotation is specified, then the topmost annotation will be used first if it exists in your project dependencies.
 * `java.import.maven.offline.enabled`: Enable/disable the Maven offline mode. Defaults to `false`.
 * `java.codeAction.sortMembers.avoidVolatileChanges`: Reordering of fields, enum constants, and initializers can result in semantic and runtime changes due to different initialization and persistence order. This setting prevents this from occurring. Defaults to `true`.
 * `java.jdt.ls.protobufSupport.enabled`: Specify whether to automatically add Protobuf output source directories to the classpath. **Note:** Only works for Gradle `com.google.protobuf` plugin `0.8.4` or higher. Defaults to `true`.
 * `java.jdt.ls.androidSupport.enabled`: [Experimental] Specify whether to enable Android project importing. When set to `auto`, the Android support will be enabled in Visual Studio Code - Insiders. **Note:** Only works for Android Gradle Plugin `3.2.0` or higher. Defaults to `auto`.
 
-New in 1.11.0
-* `java.compile.nullAnalysis.nonnull`: Specify the Nonnull annotation types to be used for null analysis. If more than one annotation is specified, then the topmost annotation will be used first if it exists in your project dependencies.
-* `java.compile.nullAnalysis.nullable`: Specify the Nullable annotation types to be used for null analysis. If more than one annotation is specified, then the topmost annotation will be used first if it exists in your project dependencies.
+New in 1.12.0
+* `java.completion.postfix.enabled`: Enable/disable postfix completion support. Defaults to `true`.
 
 Semantic Highlighting
 ===============

package.json

@@ -561,6 +561,12 @@
           ],
           "scope": "window"
         },
+        "java.completion.postfix.enabled": {
+          "type": "boolean",
+          "default": true,
+          "markdownDescription": "Enable/disable postfix completion support. `#editor.snippetSuggestions#` can be used to customize how postfix snippets are sorted.",
+          "scope": "window"
+        },
         "java.foldingRange.enabled": {
           "type": "boolean",
           "default": true,