Android minSdkVersion (#41)

* print(flutter.minSdkVersion)

* println

* Test global macros

* Test get_value macro

* Update get_value

* Check cookiecutter.pyproject.tool

* Fix get_value - 1

* Trim white-space

* trim again

* non-existsnt value

* if then

* Check for empty string

* Chec in gradle script

* fix include

{{cookiecutter.out_dir}}/_macros.jinja2

@@ -0,0 +1,16 @@
+{# _macros.jinja2 #}
+
+{% macro get_value(dict, path) %}
+    {# Split the path into keys #}
+    {% set keys = path.split('.') %}
+    {% if keys and dict is mapping and keys[0] in dict %}
+        {% set next_value = dict[keys[0]] %}
+        {% if keys | length == 1 %}
+            {{ next_value }}
+        {% else %}
+            {{ get_value(next_value, keys[1:] | join('.')) }}
+        {% endif %}
+    {% else %}
+        {{ "" }}
+    {% endif %}
+{% endmacro %}

{{cookiecutter.out_dir}}/android/app/build.gradle

@@ -1,3 +1,4 @@
+{% import "_macros.jinja2" as macros %}
 plugins {
     id "com.android.application"
     id "kotlin-android"
@@ -49,13 +50,22 @@ android {
         main.java.srcDirs += 'src/main/kotlin'
     }
 
-    defaultConfig {
+    {% set min_sdk_version = macros.get_value(cookiecutter.pyproject, "tool.flet.android.min_sdk_version") | trim %}
+    {% set target_sdk_version = macros.get_value(cookiecutter.pyproject, "tool.flet.android.target_sdk_version") | trim %}
+
+    defaultConfig {        
         applicationId "{{ cookiecutter.org_name_2 }}.{{ cookiecutter.package_name }}"
-        minSdkVersion flutter.minSdkVersion
+        minSdkVersion {{ min_sdk_version if min_sdk_version else "flutter.minSdkVersion" }}
-        targetSdkVersion flutter.targetSdkVersion
+        targetSdkVersion {{ target_sdk_version if target_sdk_version else "flutter.targetSdkVersion" }}
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
 
+        println("Gradle build config:")
+        println("  minSdkVersion: {{ min_sdk_version if min_sdk_version else "$flutter.minSdkVersion" }}")
+        println("  targetSdkVersion: {{ target_sdk_version if target_sdk_version else "$flutter.targetSdkVersion" }}")
+        println("  versionCode: $flutter.versionCode")
+        println("  versionName: $flutter.versionName")
+
 // flet: split_per_abi {% if not cookiecutter.split_per_abi %}
         ndk {
             abiFilters 'arm64-v8a', 'armeabi-v7a', 'x86_64'