Add --skip-expo option to skip Expo versioning even if detected

[sregg]

Hi! 👋

Firstly, thanks for your work on this project! 🙂

Today I used patch-package to patch react-native-version@4.0.0 for the project I'm working on.

We have a vanilla React Native app that uses expo-updates.
We don't need to update app.json but we do need to update the native files (i.e. Info.plist and build.gradle).
I added a new option --skip-expo to manually skip expo versioning even if detected.

Here is the diff that solved my problem:

diff --git a/node_modules/react-native-version/README.md b/node_modules/react-native-version/README.md
index 1f3aa85..21ce3ff 100644
--- a/node_modules/react-native-version/README.md
+++ b/node_modules/react-native-version/README.md
@@ -72,6 +72,7 @@ $ react-native-version
     -s, --set-build <number>     Set a build number. WARNING: Watch out when setting high values. This option follows Android's app versioning specifics - the value has to be an integer and cannot be greater than 2100000000. You cannot decrement this value after publishing to Google Play! More info at: https://developer.android.com/studio/publish/versioning.html#appversioning
     --generate-build             Generate build number from the package version number. (e.g. build number for version 1.22.3 will be 1022003)
     -t, --target <platforms>     Only version specified platforms, e.g. "--target android,ios".
+    -e, --skip-expo              Skip Expo versioning even if detected.
     -h, --help                   output usage information
 
 <!-- END cli -->
diff --git a/node_modules/react-native-version/cli.js b/node_modules/react-native-version/cli.js
index 15f4c32..678d5b5 100755
--- a/node_modules/react-native-version/cli.js
+++ b/node_modules/react-native-version/cli.js
@@ -53,6 +53,7 @@ program
 		'Only version specified platforms, e.g. "--target android,ios".',
 		list
 	)
+	.option("-e, --skip-expo", "Skip Expo versioning even if detected.")
 	.parse(process.argv);
 
 rnv.version(program);
diff --git a/node_modules/react-native-version/index.js b/node_modules/react-native-version/index.js
index 345f3d4..de5e692 100644
--- a/node_modules/react-native-version/index.js
+++ b/node_modules/react-native-version/index.js
@@ -114,12 +114,12 @@ function getCFBundleShortVersionString(versionName) {
  * @private
  * @return {Boolean} true if the project is an Expo app
  */
-function isExpoProject(projPath) {
+function isExpoProject(projPath, programOpts) {
 	try {
 		let module = resolveFrom(projPath, "expo");
 		let appInfo = require(`${projPath}/app.json`);
 
-		return !!(module && appInfo.expo);
+		return !!(!programOpts.skipExpo && module && appInfo.expo);
 	} catch (err) {
 		return false;
 	}
@@ -183,7 +183,7 @@ function version(program, projectPath) {
 
 	var appJSON;
 	const appJSONPath = path.join(projPath, "app.json");
-	const isExpoApp = isExpoProject(projPath);
+	const isExpoApp = isExpoProject(projPath, programOpts);
 
 	isExpoApp && log({ text: "Expo detected" }, programOpts.quiet);
 

This issue body was partially generated by patch-package.