font: add anti-aliasing and other features (#6198)

* Pack glyph bits

* Use unsigned chars for unicode strings.

* Implement multi-bit glyphs

* clang-format

* Allow extra glyphs to be added to a font

* Allow .otf and .woff file extensions

* Add printf versions with background color;
Add tests

* Whitespace...

* Move font test to new framework

* CI fix

* CI fix

* CODEOWNERS

* File extensions tested as case-insensitive

tests/components/font/test.esp32.yaml

@@ -0,0 +1,27 @@
+font:
+  - file: "gfonts://Roboto"
+    id: roboto
+    size: 20
+    glyphs: "0123456789."
+    extras:
+      - file: "gfonts://Roboto"
+        glyphs: ["\u00C4", "\u00C5", "\U000000C7"]
+
+spi:
+  clk_pin: 14
+  mosi_pin: 13
+
+display:
+  - id: my_display
+    platform: ili9xxx
+    dimensions: 480x320
+    model: ST7796
+    cs_pin: 15
+    dc_pin: 21
+    reset_pin: 22
+    transform:
+      swap_xy: true
+      mirror_x: true
+      mirror_y: true
+    auto_clear_enabled: false
+

tests/test8.yaml

@@ -52,6 +52,11 @@ spi_device:
   mode: 3
   bit_order: lsb_first
 
+font:
+  - file: "gfonts://Roboto"
+    id: roboto
+    size: 20
+
 display:
   - platform: ili9xxx
     id: displ8
@@ -61,6 +66,8 @@ display:
     reset_pin:
       number: GPIO48
       allow_other_uses: true
+    lambda: |-
+      it.printf(10, 100, id(roboto), Color(0x123456), COLOR_OFF, display::TextAlign::BASELINE, "%f", id(heap_free).state);
 
 i2c:
   scl: GPIO18
@@ -85,6 +92,7 @@ binary_sensor:
 sensor:
   - platform: debug
     free:
+      id: heap_free
       name: "Heap Free"
     block:
       name: "Max Block Free"