Restructure project directories (#333)

`/client/web` -> `/frontend`
`/client/cli` -> *delete for now*
`/client/native` -> *delete for now*
`/core/editor` -> `/editor`
`/core/document` -> `/graphene`
`/core/renderer` -> `/charcoal`
`/core/proc-macro` -> `/proc-macros` *(now plural)*

frontend/src/components/widgets/buttons/TextButton.vue

@@ -0,0 +1,66 @@
+<template>
+	<button class="text-button" :class="{ emphasized, disabled }" :style="minWidth > 0 ? `min-width: ${minWidth}px` : ''" @click="action">
+		<TextLabel>{{ label }}</TextLabel>
+	</button>
+</template>
+
+<style lang="scss">
+.text-button {
+	display: inline-flex;
+	justify-content: center;
+	align-items: center;
+	flex: 0 0 auto;
+	height: 24px;
+	padding: 0 8px;
+	box-sizing: border-box;
+	outline: none;
+	border: none;
+	border-radius: 2px;
+	background: var(--color-5-dullgray);
+	color: var(--color-e-nearwhite);
+
+	&:hover {
+		background: var(--color-6-lowergray);
+		color: var(--color-f-white);
+	}
+
+	&.emphasized {
+		background: var(--color-accent);
+		color: var(--color-f-white);
+
+		&:hover {
+			background: var(--color-accent-hover);
+		}
+
+		&.disabled {
+			background: var(--color-accent-disabled);
+		}
+	}
+
+	&.disabled {
+		background: var(--color-4-dimgray);
+		color: var(--color-8-uppergray);
+	}
+
+	& + .text-button {
+		margin-left: 8px;
+	}
+}
+</style>
+
+<script lang="ts">
+import { defineComponent } from "vue";
+import TextLabel from "@/components/widgets/labels/TextLabel.vue";
+
+export default defineComponent({
+	props: {
+		action: { type: Function, required: true },
+		label: { type: String, required: true },
+		emphasized: { type: Boolean, default: false },
+		disabled: { type: Boolean, default: false },
+		minWidth: { type: Number, default: 0 },
+		gapAfter: { type: Boolean, default: false },
+	},
+	components: { TextLabel },
+});
+</script>