Remove MockRelease scheme, add it as a build configuration instead

ios/Configurations/Api.xcconfig.template

@@ -1,7 +1,9 @@
 API_HOST_NAME[config=Debug] = api.mullvad.net
 API_HOST_NAME[config=Release] = api.mullvad.net
+API_HOST_NAME[config=MockRelease] = api.mullvad.net
 API_HOST_NAME[config=Staging] = api.stagemole.eu
 
 API_ENDPOINT[config=Debug] = 45.83.223.196:443
 API_ENDPOINT[config=Release] = 45.83.223.196:443
+API_ENDPOINT[config=MockRelease] = 45.83.223.196:443
 API_ENDPOINT[config=Staging] = 85.203.53.95:443

ios/Configurations/App.xcconfig.template

@@ -4,4 +4,5 @@
 // Comment out the lines below if using automatic code sign
 PROVISIONING_PROFILE_SPECIFIER[config=Debug][sdk=*][arch=*] = Mullvad VPN Development
 PROVISIONING_PROFILE_SPECIFIER[config=Staging][sdk=*][arch=*] = Mullvad VPN Development
+PROVISIONING_PROFILE_SPECIFIER[config=MockRelease][sdk=*][arch=*] = Mullvad VPN Development
 PROVISIONING_PROFILE_SPECIFIER[config=Release][sdk=*][arch=*] = Mullvad VPN Release

ios/Configurations/Base.xcconfig.template

@@ -17,4 +17,5 @@ CODE_SIGN_STYLE = Manual
 // Code signing identity
 CODE_SIGN_IDENTITY[config=Debug] = Apple Development
 CODE_SIGN_IDENTITY[config=Staging] = Apple Development
+CODE_SIGN_IDENTITY[config=MockRelease] = Apple Development
 CODE_SIGN_IDENTITY[config=Release] = Apple Distribution

ios/Configurations/PacketTunnel.xcconfig.template

@@ -5,4 +5,5 @@
 // Comment out the lines below if using automatic code sign
 PROVISIONING_PROFILE_SPECIFIER[config=Debug][sdk=*][arch=*] = Packet Tunnel Development
 PROVISIONING_PROFILE_SPECIFIER[config=Staging][sdk=*][arch=*] = Packet Tunnel Development
+PROVISIONING_PROFILE_SPECIFIER[config=MockRelease][sdk=*][arch=*] = Packet Tunnel Development
 PROVISIONING_PROFILE_SPECIFIER[config=Release][sdk=*][arch=*] = Packet Tunnel Release