Allow creating IPAddress object from string and provide = overload (#174)

* Allow creating IPAddress object from string and provide = overload

Co-authored-by: per1234 <accounts@perglass.com>

Author: pennam

api/IPAddress.cpp

@@ -89,6 +89,11 @@ IPAddress::IPAddress(IPType ip_type, const uint8_t *address)
     }
 }
 
+IPAddress::IPAddress(const char *address)
+{
+    fromString(address);
+}
+
 bool IPAddress::fromString(const char *address) {
     if (!fromString4(address)) {
         return fromString6(address);
@@ -225,6 +230,12 @@ IPAddress& IPAddress::operator=(const uint8_t *address)
     return *this;
 }
 
+IPAddress& IPAddress::operator=(const char *address)
+{
+    fromString(address);
+    return *this;
+}
+
 IPAddress& IPAddress::operator=(uint32_t address)
 {
     // IPv4 conversion

api/IPAddress.h

@@ -67,6 +67,8 @@ class IPAddress : public Printable {
      // Default IPv4
     IPAddress(const uint8_t *address);
     IPAddress(IPType ip_type, const uint8_t *address);
+    // If IPv4 fails tries IPv6 see fromString function
+    IPAddress(const char *address);
 
     bool fromString(const char *address);
     bool fromString(const String &address) { return fromString(address.c_str()); }
@@ -90,6 +92,8 @@ class IPAddress : public Printable {
     IPAddress& operator=(const uint8_t *address);
     // NOTE: IPv4 only; see implementation note
     IPAddress& operator=(uint32_t address);
+    // If IPv4 fails tries IPv6 see fromString function
+    IPAddress& operator=(const char *address);
 
     virtual size_t printTo(Print& p) const;