feat: Initialize BIND9 Ansible role

- Add complete role structure with templates
- Create comprehensive README documentation
- Set up Travis CI configuration
- Add meta information and default variables

templates/named.conf.trust-anchors.j2

@@ -0,0 +1,13 @@
+{% macro trust_anchors(trust_anchors) %}
+trust-anchors {
+{% filter indent(2, true) %}
+{% for anchor in trust_anchors if trust_anchors is iterable %}
+{{ (anchor.name | string) -}}
+{{ (' ' + anchor.type) -}}
+{{ (' ' + anchor.flags | string) -}}
+{{ (' ' + anchor.protocol | string) -}}
+{{ (' ' + anchor.algorithm | string) -}}
+{{ (' "' + anchor.key + '"') -}};
+{% endfor %}
+{% endfilter %}};
+{% endmacro %}