Add text component (#5336)

Co-authored-by: Maurits <maurits@vloop.nl>
Co-authored-by: mauritskorse <mauritskorse@gmail.com>
Co-authored-by: Daniel Dunn <dannydunn@eternityforest.com>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

esphome/components/text/text_call.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "esphome/core/helpers.h"
+#include "text_traits.h"
+
+namespace esphome {
+namespace text {
+
+class Text;
+
+class TextCall {
+ public:
+  explicit TextCall(Text *parent) : parent_(parent) {}
+  void perform();
+
+  TextCall &set_value(const std::string &value);
+
+ protected:
+  Text *const parent_;
+  optional<std::string> value_;
+  void validate_();
+};
+
+}  // namespace text
+}  // namespace esphome