create CoreStore interface to allow different implements for local storage (#166)

implement default local store using sembast and with encryption using XXTEA algorithm

add desktop support in example project

Author: WahdanZ

.gitignore

@@ -8,3 +8,5 @@ pubspec.lock
 
 build/
 .idea
+example/ios/Frameworks/
+example/lib/ui/

example/.vscode/launch.json

@@ -0,0 +1,12 @@
+{
+
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Flutter Desktop Attach",
+            "request": "attach",
+            "observatoryUri": "http://127.0.0.1:52878/UWW_6_X9Y74=/",
+            "type": "dart"
+        }
+    ]
+}

example/android/.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>android</name>
+	<comment>Project android created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+</projectDescription>

example/android/.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,2 @@
+connection.project.dir=
+eclipse.preferences.version=1

example/android/app/.classpath

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8/"/>
+	<classpathentry kind="con" path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

example/android/app/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>app</name>
+	<comment>Project app created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+</projectDescription>

example/android/app/.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,2 @@
+connection.project.dir=..
+eclipse.preferences.version=1

example/android/app/src/main/gen/com/example/flutterpluginexample/BuildConfig.java

@@ -0,0 +1,8 @@
+/*___Generated_by_IDEA___*/
+
+package com.example.flutterpluginexample;
+
+/* This stub is only used by the IDE. It is NOT the BuildConfig class actually packed into the APK */
+public final class BuildConfig {
+  public final static boolean DEBUG = Boolean.parseBoolean(null);
+}

example/android/app/src/main/gen/com/example/flutterpluginexample/Manifest.java

@@ -0,0 +1,7 @@
+/*___Generated_by_IDEA___*/
+
+package com.example.flutterpluginexample;
+
+/* This stub is only used by the IDE. It is NOT the Manifest class actually packed into the APK */
+public final class Manifest {
+}

example/android/app/src/main/gen/com/example/flutterpluginexample/R.java

@@ -0,0 +1,7 @@
+/*___Generated_by_IDEA___*/
+
+package com.example.flutterpluginexample;
+
+/* This stub is only used by the IDE. It is NOT the R class actually packed into the APK */
+public final class R {
+}