feat: added standard types enum (#29)

Added some standard types and wildcard type.

Ticket: #27

src/main/java/wtf/g4s8/mime/StandardTypes.java

@@ -0,0 +1,57 @@
+/*
+ * The MIT License (MIT) Copyright (c) 2017-2021 Kirill Ch. <g4s8.public@gmail.com>
+ * https://github.com/g4s8/mime/LICENSE.txt
+ */
+package wtf.g4s8.mime;
+
+import java.util.Optional;
+import java.util.Set;
+
+/**
+ * Standard MIME types.
+ * @since 2.2
+ */
+public enum StandardTypes implements MimeType {
+
+    WILDCARD("*", "*"),
+    APPLICATION_OCTETSTREAM("application", "octet-stream"),
+    TEXT_PLAIN("text", "plain"),
+    TEXT_CSS("text", "css"),
+    TEXT_HTML("text", "html"),
+    TEXT_JAVASCRIPT("text", "javascript"),
+    APPLICATION_JAVASCRIPT("application", "javascript");
+
+    /**
+     * Origin MIME.
+     */
+    private final MimeType origin;
+
+    /**
+     * Private enum constructor.
+     * @param type MIME type
+     * @param subtype MIME subtype
+     */
+    private StandardTypes(final String type, final String subtype) {
+        this.origin = new MimeTypeSimple(type, subtype);
+    }
+
+    @Override
+    public String type() {
+        return this.origin.type();
+    }
+
+    @Override
+    public String subtype() {
+        return this.origin.subtype();
+    }
+
+    @Override
+    public Optional<String> param(String name) {
+        return this.origin.param(name);
+    }
+
+    @Override
+    public Set<String> params() {
+        return this.origin.params();
+    }
+}