Revert "Removed src files"

This reverts commit f778c24.

.parcelrc

@@ -0,0 +1,18 @@
+{
+    "extends": [
+        "@parcel/config-default"
+    ],
+    "namers": [
+        "@mischnic/parcel-namer-preserve-structure",
+        "..."
+    ],
+    "optimizers": {
+        "*.html": [
+            "parcel-optimizer-friendly-urls",
+            "..."
+        ],
+        "*.js": [
+            "@parcel/optimizer-terser"
+        ]
+    }
+}

.postcssrc

@@ -0,0 +1,10 @@
+{
+    "plugins": {
+        "postcss-mixins": true,
+        "postcss-import": true,
+        "postcss-advanced-variables": true,
+        "postcss-nesting": true,
+        "postcss-custom-selectors": true,
+        "postcss-variable-compress": true
+    }
+}

.prettierrc

@@ -0,0 +1,26 @@
+{
+    "printWidth": 80,
+    "proseWrap": "always",
+    "trailingComma": "es5",
+    "useTabs": false,
+    "tabWidth": 4,
+    "semi": true,
+    "singleQuote": false,
+    "bracketSpacing": false,
+    "singleAttributePerLine": false,
+    "arrowParens": "always",
+    "overrides": [
+        {
+            "files": "*.js",
+            "options": {
+                "singleQuote": true
+            }
+        },
+        {
+            "files": "*.html",
+            "options": {
+                "printWidth": 100
+            }
+        }
+    ]
+}