feat: Add more new mdi icons

Signed-off-by: Christopher Ng <chrng8@gmail.com>

core/img/filetypes/application-pdf.svg

@@ -1 +1,5 @@
-<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"><path d="m2.5 1c-0.28 0-0.5 0.22-0.5 0.5v13c0 0.28 0.22 0.5 0.5 0.5h11c0.28 0 0.5-0.22 0.5-0.5v-10.5l-3-3z" fill="#dc5047"/><g fill="#fff" aria-label="PDF"><path d="m4.9093 8.443v1.057h-0.61813v-3h1.1703q0.33791 0 0.59341 0.12363 0.25755 0.12363 0.3956 0.35234 0.13805 0.22665 0.13805 0.51717 0 0.44093-0.30288 0.69643-0.30082 0.25343-0.83448 0.25343zm0-0.50069h0.5522q0.24519 0 0.37294-0.11538 0.12981-0.11538 0.12981-0.32967 0-0.22047-0.12981-0.35646t-0.35852-0.14011h-0.56662z"/><path d="m7.011 9.5v-3h0.92308q0.3956 0 0.70673 0.17926 0.31319 0.1772 0.48832 0.50687 0.17514 0.32761 0.17514 0.74588v0.13805q0 0.41827-0.17308 0.74382-0.17102 0.32555-0.4842 0.50481-0.31319 0.17926-0.70673 0.18132zm0.61813-2.4993v2.0027h0.29876q0.36264 0 0.55426-0.23695t0.19574-0.67788v-0.15865q0-0.45742-0.18956-0.69231-0.18956-0.23695-0.55426-0.23695z"/><path d="m11.56 8.274h-1.1868v1.226h-0.61813v-3h1.9533v0.50069h-1.3352v0.77473h1.1868z"/></g></svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24">
+  <path d="M0 0h24v24H0V0z" fill="none" />
+  <path fill="#dc5047"
+    d="M20 2H8c-1.1 0-2 .9-2 2v12c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2zm-8.5 7.5c0 .83-.67 1.5-1.5 1.5H9v1.25c0 .41-.34.75-.75.75s-.75-.34-.75-.75V8c0-.55.45-1 1-1H10c.83 0 1.5.67 1.5 1.5v1zm5 2c0 .83-.67 1.5-1.5 1.5h-2c-.28 0-.5-.22-.5-.5v-5c0-.28.22-.5.5-.5h2c.83 0 1.5.67 1.5 1.5v3zm4-3.75c0 .41-.34.75-.75.75H19v1h.75c.41 0 .75.34.75.75s-.34.75-.75.75H19v1.25c0 .41-.34.75-.75.75s-.75-.34-.75-.75V8c0-.55.45-1 1-1h1.25c.41 0 .75.34.75.75zM9 9.5h1v-1H9v1zM3 6c-.55 0-1 .45-1 1v13c0 1.1.9 2 2 2h13c.55 0 1-.45 1-1s-.45-1-1-1H5c-.55 0-1-.45-1-1V7c0-.55-.45-1-1-1zm11 5.5h1v-3h-1v3z" />
+</svg>

core/img/filetypes/image.svg

@@ -1 +1,5 @@
-<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"><path d="m1.5 2c-0.2 0-0.5 0.3-0.5 0.5v11c0 0.2 0.3 0.5 0.5 0.5h13c0.2 0 0.5-0.3 0.5-0.5v-11c0-0.2-0.3-0.5-0.5-0.5zm0.5 1h12v5l-1-1-3 4-3-3-4 4h-1zm2.5 1c-0.83 0-1.5 0.67-1.5 1.5s0.67 1.5 1.5 1.5 1.5-0.67 1.5-1.5-0.67-1.5-1.5-1.5z" fill="#969696"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24">
+  <path d="M0 0h24v24H0V0z" fill="none" />
+  <path fill="#969696"
+    d="M21 19V5c0-1.1-.9-2-2-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2zM8.9 13.98l2.1 2.53 3.1-3.99c.2-.26.6-.26.8.01l3.51 4.68c.25.33.01.8-.4.8H6.02c-.42 0-.65-.48-.39-.81L8.12 14c.19-.26.57-.27.78-.02z" />
+</svg>

core/img/filetypes/video.svg

@@ -1 +1,5 @@
-<svg width="16" height="16" version="1.1" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"><path d="m1.5 2c-0.2 0.05-0.5 0.29-0.5 0.5v11c0 0.23 0.274 0.5 0.5 0.5h13c0.34 0 0.5-0.26 0.5-0.5v-11c0-0.34-0.249-0.5-0.5-0.5zm0.5 1h12v10h-12zm3 2v6l6-3z" fill="#969696"/></svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24">
+  <path d="M0 0h24v24H0z" fill="none" />
+  <path fill="#969696"
+    d="M18 4l2 4h-3l-2-4h-2l2 4h-3l-2-4H8l2 4H7L5 4H4c-1.1 0-1.99.9-1.99 2L2 18c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V4h-4z" />
+</svg>