Add presentation/projector icons (#1327)

* Add `projector` icon

* Add `presentation-screen` icon

* Add `presentation` (whiteboard) icon

* Consolidate `presentation` icons

* Refine `presentation` icon

* Update icons/projector.svg

Co-authored-by: Karsa <contact@karsa.org>

---------

Co-authored-by: Karsa <contact@karsa.org>

icons/presentation.json

@@ -0,0 +1,29 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "danielbayley"
+  ],
+  "tags": [
+    "screen",
+    "whiteboard",
+    "marker pens",
+    "markers",
+    "blackboard",
+    "chalk",
+    "easel",
+    "school",
+    "learning",
+    "lesson",
+    "office",
+    "meeting",
+    "project",
+    "planning"
+  ],
+  "categories": [
+    "multimedia",
+    "photography",
+    "devices",
+    "communication",
+    "design"
+  ]
+}

icons/presentation.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="M2 3h20" />
+  <path d="M21 3v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V3" />
+  <path d="m7 21 5-5 5 5" />
+</svg>

icons/projector.json

@@ -0,0 +1,24 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "danielbayley"
+  ],
+  "tags": [
+    "cinema",
+    "film",
+    "movie",
+    "home video",
+    "presentation",
+    "slideshow",
+    "office",
+    "meeting",
+    "project",
+    "planning"
+  ],
+  "categories": [
+    "multimedia",
+    "photography",
+    "devices",
+    "communication"
+  ]
+}

icons/projector.svg

@@ -0,0 +1,18 @@
+<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="M5 7 3 5" />
+  <path d="M9 6V3" />
+  <path d="m13 7 2-2" />
+  <circle cx="9" cy="13" r="3" />
+  <path d="M11.83 12H20a2 2 0 0 1 2 2v4a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2v-4a2 2 0 0 1 2-2h2.17" />
+  <path d="M16 16h2" />
+</svg>