Add a makefile with a lot of examples.

Makefile

@@ -0,0 +1,49 @@
+all: run-dnsmanagerd
+
+# No idea why, but I need that to run applications. Ignore that.
+LD_P ?= LD_PRELOAD=/usr/local/lib/libipc.so.0
+
+DOMAIN ?= example.com
+KEY_FILE ?= /tmp/KEY
+setup:
+	@echo -n "coucou" > $(KEY_FILE)
+
+zone-file:
+	crystal run ./tools/write-zone-file.cr -- $(DOMAIN)
+
+build-server:
+	shards build dnsmanagerd
+
+build-client:
+	shards build dnsmanager-client
+
+VERBOSITY ?= 4
+run-client-verbosity:
+	@$(LD_P) ./bin/dnsmanager-client admin maintenance -k $(KEY_FILE) verbosity $(VERBOSITY)
+
+run-client-zone-add:
+	@$(LD_P) ./bin/dnsmanager-client user zone add $(DOMAIN).json
+
+run-client-zone-del:
+	@$(LD_P) ./bin/dnsmanager-client user zone del $(DOMAIN)
+
+RRID ?= 1
+NAME ?=
+TTL ?= 3600
+TARGET ?=
+run-client-rr-add-a:
+	@$(LD_P) ./bin/dnsmanager-client user rr add A $(DOMAIN) $(NAME) $(TTL) $(TARGET)
+run-client-rr-update-a:
+	@$(LD_P) ./bin/dnsmanager-client user rr update A $(DOMAIN) $(RRID) $(NAME) $(TTL) $(TARGET)
+
+run-client-rr-del:
+	@$(LD_P) ./bin/dnsmanager-client user rr del $(DOMAIN) $(RRID)
+
+run-client-zone-get:
+	@$(LD_P) ./bin/dnsmanager-client user zone get $(DOMAIN)
+
+run-client-zone-list:
+	@$(LD_P) ./bin/dnsmanager-client user zone list
+
+run-dnsmanagerd:
+	@$(LD_P) ./bin/dnsmanagerd -v 4 -r /tmp/DATA-dnsmanagerd -k $(KEY_FILE)