refactor: remove static methods in MPNotificationController and deprecate MPStateMachine (#434)

* Created app environment provider

* replaced usage of static methods in mP.m

* Create protocol for MPNotificationController

* switched from static methods

* replaced usage of notif controller static methods

* removed initialization from methods to class init

* fixed compilation issue

* Update mParticle_iOS_SDKTests-Bridging-Header.h

* make properties nonnull

* Revert removal of static method and mark deprecation instead

* put back deprecated static methods in implementation

* cleaned up duplicated code

* marked isAppExtension static method for deprecation

* Update build-and-lint.yml

* Revert to commit 0277379

* mark for deprecated method

BREAKING CHANGE: Static methods in MPNotificationController have been fully removed.
Use the new instance-based MPNotificationControllerProtocol implementation instead.

DEPRECATED: Static methods in MPStateMachine are deprecated and will be removed in a future release.
Migrate to the new instance-based approach.

Author: nickolas-dimitrakas

mParticle-Apple-SDK.xcodeproj/project.pbxproj

@@ -513,7 +513,7 @@
 		727801E12EB0FECA00BDAD98 /* AppEnvironmentProviderMock.swift in Sources */ = {isa = PBXBuildFile; fileRef = 727801E02EB0FECA00BDAD98 /* AppEnvironmentProviderMock.swift */; };
 		727801E22EB0FECA00BDAD98 /* AppEnvironmentProviderMock.swift in Sources */ = {isa = PBXBuildFile; fileRef = 727801E02EB0FECA00BDAD98 /* AppEnvironmentProviderMock.swift */; };
 		727801E42EB1131B00BDAD98 /* MPAppNotificationHandlerMock.swift in Sources */ = {isa = PBXBuildFile; fileRef = 727801E32EB1131B00BDAD98 /* MPAppNotificationHandlerMock.swift */; };
-		727801E52EB1131B00BDAD98 /* MPAppNotificationHandlerMock.swift in Sources */ = {isa = PBXBuildFile; fileRef = 727801E32EB1131B00BDAD98 /* MPAppNotificationHandlerMock.swift */; };
+		727801E52EB1131B00BDAD98 /* MPAppNotificationHandlerMock.swift in Sources */ = {isa = PBXBuildFile; fileRef = 727801E32EB1131B00BDAD98 /* MPAppNotificationHandlerMock.swift */; }; MPStateMachine (#434))
 		729721762EAC2AD60045E55C /* AppEnvironmentProvider.h in Headers */ = {isa = PBXBuildFile; fileRef = 729721752EAC2AD60045E55C /* AppEnvironmentProvider.h */; };
 		729721772EAC2AD60045E55C /* AppEnvironmentProvider.h in Headers */ = {isa = PBXBuildFile; fileRef = 729721752EAC2AD60045E55C /* AppEnvironmentProvider.h */; };
 		729721792EAC2B750045E55C /* AppEnvironmentProvider.m in Sources */ = {isa = PBXBuildFile; fileRef = 729721782EAC2B750045E55C /* AppEnvironmentProvider.m */; };