feat(single-instance): Add semver compatibility check for Windows and Linux (#502)

* added semver compatibility check for Windows and Linux

* fixed formatting

* put semver feature behind a feature flag

* remove semver from root manifest

* linux compile error

* docs: Add mention for semver feature in readme

---------

Co-authored-by: FabianLars <fabianlars@fabianlars.de>

plugins/single-instance/Cargo.toml

@@ -16,6 +16,7 @@ serde_json = { workspace = true }
 tauri = { workspace = true }
 log = { workspace = true }
 thiserror = { workspace = true }
+semver = { version = "1", optional = true }
 
 [target.'cfg(target_os = "windows")'.dependencies.windows-sys]
 version = "0.52"
@@ -31,3 +32,6 @@ features = [
 
 [target.'cfg(target_os = "linux")'.dependencies]
 zbus = "3"
+
+[features]
+semver = ["dep:semver"]