chore!(amneziawg): refactor to be separate from wireguard

- amneziawg is now a VPN protocol and no longer a Wireguard implementation
- Use it with VPN_TYPE=amneziawg
- document AMNEZIAWG_* options in Dockerfile
- document amneziawg support in readme
- separate amneziawg settings and code from wireguard
- re-use code from wireguard whenever possible

internal/configuration/sources/files/wireguard_test.go

@@ -97,10 +97,9 @@ func Test_parseWireguardInterfaceSection(t *testing.T) {
 	t.Parallel()
 
 	testCases := map[string]struct {
-		iniData       string
-		privateKey    *string
-		addresses     *string
-		amneziaParams amneziaWgConfig
+		iniData    string
+		privateKey *string
+		addresses  *string
 	}{
 		"no_fields": {
 			iniData: `[Interface]`,
@@ -116,17 +115,9 @@ PrivateKey = x
 [Interface]
 PrivateKey = QOlCgyA/Sn/c/+YNTIEohrjm8IZV+OZ2AUFIoX20sk8=
 Address = 10.38.22.35/32
-Jc = 4
-H1 = 721391205
-I1 = <b 0x1234>
 `,
 			privateKey: ptrTo("QOlCgyA/Sn/c/+YNTIEohrjm8IZV+OZ2AUFIoX20sk8="),
 			addresses:  ptrTo("10.38.22.35/32"),
-			amneziaParams: amneziaWgConfig{
-				Jc: ptrTo("4"),
-				H1: ptrTo("721391205"),
-				I1: ptrTo("<b 0x1234>"),
-			},
 		},
 	}
 
@@ -140,11 +131,9 @@ I1 = <b 0x1234>
 			require.NoError(t, err)
 
 			privateKey, addresses := parseWireguardInterfaceSection(iniSection)
-			amneziaWgConfig := parseWireguardAmneziaInterfaceSection(iniSection)
 
 			assert.Equal(t, testCase.privateKey, privateKey)
 			assert.Equal(t, testCase.addresses, addresses)
-			assert.Equal(t, testCase.amneziaParams, amneziaWgConfig)
 		})
 	}
 }