TRA-3212 Passive-Tapper and Mizu share code (#70)

* Use log in tap package instead of fmt.

* Moved api/pkg/tap to root.

* Added go.mod and go.sum for tap.

* Added replace for shared.

* api uses tap module instead of tap package.

* Removed dependency of tap in shared by moving env var out of tap.

* Fixed compilation bugs.

* Fixed: Forgot to export struct field HostMode.

* Removed unused flag.

* Close har output channel when done.

* Moved websocket out of mizu and into passive-tapper.

* Send connection details over har output channel.

* Fixed compilation errors.

* Removed unused info from request response cache.

* Renamed connection -> connectionID.

* Fixed rename bug.

* Export setters and getters for filter ips and ports.

* Added tap dependency to Dockerfile.

* Uncomment error messages.

* Renamed `filterIpAddresses` -> `filterAuthorities`.

* Renamed ConnectionID -> ConnectionInfo.

* Fixed: Missed one replace.

tap/settings.go

@@ -0,0 +1,31 @@
+package tap
+
+type globalSettings struct {
+	filterPorts       []int
+	filterAuthorities []string
+}
+
+var gSettings = &globalSettings{
+	filterPorts:       []int{},
+	filterAuthorities: []string{},
+}
+
+func SetFilterPorts(ports []int) {
+	gSettings.filterPorts = ports
+}
+
+func GetFilterPorts() []int {
+	ports := make([]int, len(gSettings.filterPorts))
+	copy(ports, gSettings.filterPorts)
+	return ports
+}
+
+func SetFilterAuthorities(ipAddresses []string) {
+	gSettings.filterAuthorities = ipAddresses
+}
+
+func GetFilterIPs() []string {
+	addresses := make([]string, len(gSettings.filterAuthorities))
+	copy(addresses, gSettings.filterAuthorities)
+	return addresses
+}