Add -v/--version flag to print version string (#3883)

* Add `-v/--version` flag to print version string

- Created a new flag `-v/--version` in the command-line interface to display the version number and exit.
- Moved all version-related functions inside the config package to the new file `manager/config/version.go` to avoid circular dependencies.
- Added a new `GetVersionString()` function to generate a formatted version string.
- Updated references to the moved version functions.
- Updated references in the `Makefile`.

* Move version embeds to build package

* Remove githash var

---------

Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

internal/api/check_version.go

@@ -13,6 +13,7 @@ import (
 
 	"golang.org/x/sys/cpu"
 
+	"github.com/stashapp/stash/internal/build"
 	"github.com/stashapp/stash/pkg/logger"
 )
 
@@ -170,7 +171,7 @@ func GetLatestRelease(ctx context.Context) (*LatestRelease, error) {
 	wantedRelease := stashReleases()[platform]
 
 	url := apiReleases
-	if IsDevelop() {
+	if build.IsDevelop() {
 		// get the release tagged with the development tag
 		url += "/tags/" + developmentTag
 	} else {
@@ -213,7 +214,7 @@ func GetLatestRelease(ctx context.Context) (*LatestRelease, error) {
 		}
 	}
 
-	_, githash, _ := GetVersion()
+	_, githash, _ := build.Version()
 	shLength := len(githash)
 	if shLength == 0 {
 		shLength = defaultSHLength
@@ -273,7 +274,7 @@ func printLatestVersion(ctx context.Context) {
 	if err != nil {
 		logger.Errorf("Couldn't retrieve latest version: %v", err)
 	} else {
-		_, githash, _ = GetVersion()
+		_, githash, _ := build.Version()
 		switch {
 		case githash == "":
 			logger.Infof("Latest version: %s (%s)", latestRelease.Version, latestRelease.ShortHash)