feat(icons): Added new icons: clef-g, clef-f and clef-c (#4083)

* Added new icons: clef-g, clef-f and clef-c

* rename and design updates from feedback

* fix typo in filename

* Update clef-bass.svg

* Update clef-treble.json

* Update clef-bass.json

* Update clef-alto.json

---------

Co-authored-by: Karsa <contact@karsa.org>
Co-authored-by: Eric Fennis <eric.fennis@gmail.com>

icons/clef-alto.json

@@ -0,0 +1,30 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "rrod497"
+  ],
+  "use-cases": [
+    "Labeling alto clef notation in sheet music editors",
+    "Representing viola parts in music composition or practice apps",
+    "Indicating C clef selection in notation software",
+    "Supporting clef choices in MIDI editors, instrument emulators, or music education tools"
+  ],
+  "tags": [
+    "do",
+    "c",
+    "music",
+    "note",
+    "key",
+    "soprano",
+    "mezzo",
+    "alto",
+    "staff",
+    "pitch",
+    "baritone",
+    "major",
+    "scale"
+  ],
+  "categories": [
+    "multimedia"
+  ]
+}

icons/clef-alto.svg

@@ -0,0 +1,15 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M10 4v16" />
+  <path d="M14 4.764a3 3 0 1 1-.152 4.327A4 4 0 0 1 10 12a4 4 0 0 1 3.848 2.909A3 3 0 1 1 14 19.236" />
+  <path d="M6 4v16" />
+</svg>

icons/clef-bass.json

@@ -0,0 +1,29 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "rrod497"
+  ],
+  "use-cases": [
+    "Labeling bass clef notation in sheet music editors",
+    "Representing bass, cello, trombone, tuba, or lower-pitched instrument parts",
+    "Indicating left-hand piano notation in music learning apps",
+    "Supporting clef choices in MIDI editors, instrument emulators, or music education tools"
+  ],
+  "tags": [
+    "fa",
+    "f",
+    "music",
+    "note",
+    "key",
+    "baritone",
+    "staff",
+    "pitch",
+    "bass",
+    "subbass",
+    "major",
+    "scale"
+  ],
+  "categories": [
+    "multimedia"
+  ]
+}

icons/clef-bass.svg

@@ -0,0 +1,16 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M19 11h.01" />
+  <path d="M19 6h.01" />
+  <path d="M5 8c0-4 4-4 4-4 6 0 6 6 6 6 0 7-10 11-10 11" />
+  <circle cx="7" cy="8" r="2" />
+</svg>

icons/clef-treble.json

@@ -0,0 +1,29 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "rrod497"
+  ],
+  "use-cases": [
+    "Representing music, songs, or audio content with a widely recognized symbol",
+    "Labeling sheet music, notation tools, or music education resources",
+    "Indicating melody, vocals, or higher-pitched instrument parts",
+    "Representing music apps, playlists, concerts, or performance features"
+  ],
+  "tags": [
+    "sol",
+    "g",
+    "music",
+    "note",
+    "key",
+    "treble",
+    "staff",
+    "pitch",
+    "violin",
+    "solfege",
+    "major",
+    "scale"
+  ],
+  "categories": [
+    "multimedia"
+  ]
+}

icons/clef-treble.svg

@@ -0,0 +1,13 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M10.586 21.414a2 2 0 0 0 3.378-1.791L11.036 4.377a2 2 0 1 1 3.378 1.037C12.414 7.414 7 8 7 13a5 5 0 0 0 5 5 5 4 0 0 0 5-4 3 3 0 0 0-3-3 3 2 0 0 0-3 2" />
+</svg>