Add a Contact Me button in the preferences

This can not be tested on an emulator, requires a full device

app/src/main/kotlin/org/bspeice/minimalbible/activity/settings/ContactPreference.kt

@@ -0,0 +1,35 @@
+package org.bspeice.minimalbible.activity.settings
+
+import android.content.Context
+import android.util.AttributeSet
+import android.preference.Preference
+import android.content.Intent
+import org.bspeice.minimalbible.R
+import android.os.Build
+import android.net.Uri
+
+class ContactPreference(val ctx: Context, val attrs: AttributeSet)
+: Preference(ctx, attrs), Preference.OnPreferenceClickListener {
+
+    {
+        setOnPreferenceClickListener(this);
+    }
+
+    override fun onPreferenceClick(preference: Preference?): Boolean {
+        val address = ctx.getString(R.string.contact_developer_address)
+        val pInfo = ctx.getPackageManager().getPackageInfo(ctx.getPackageName(), 0)
+
+
+        val i = Intent(Intent.ACTION_SENDTO, Uri.fromParts("mailto", address, null))
+        i.putExtra(Intent.EXTRA_SUBJECT, ctx.getString(R.string.contact_developer_subject))
+        i.putExtra(Intent.EXTRA_TEXT, """
+
+Useful information for the developer:
+Build code: ${pInfo.versionCode}
+Build name: ${pInfo.versionName}
+Android SDK: ${Build.VERSION.SDK_INT}""")
+        ctx.startActivity(i)
+
+        return true;
+    }
+}

app/src/main/res/values/strings.xml

@@ -11,4 +11,7 @@
 
     <string name="error_book_refresh">Error refreshing. Try again later</string>
 
+    <string name="contact_developer_address">bspeice.nc@gmail.com</string>
+    <string name="contact_developer_subject">MinimalBible Feedback</string>
+
 </resources>

app/src/main/res/xml/preferences.xml

@@ -25,4 +25,9 @@ but I will likely want to re-implement this in the future -->
         android:key="defaultBookInitials"
         android:title="Active Book" />
 
+    <org.bspeice.minimalbible.activity.settings.ContactPreference
+        android:key="null"
+        android:summary="Let the developers know what you think of the app!"
+        android:title="Contact Me" />
+
 </PreferenceScreen>