feat: added inbuilt themes (#105)

* feat: added inbuilt themes

* docs: added theming docs

* docs: update docs

themes/index.js

@@ -0,0 +1,76 @@
+const themes = {
+  default: {
+    title_color: "2f80ed",
+    icon_color: "4c71f2",
+    text_color: "333",
+    bg_color: "FFFEFE",
+  },
+  default_repocard: {
+    title_color: "2f80ed",
+    icon_color: "586069", // icon color is different
+    text_color: "333",
+    bg_color: "FFFEFE",
+  },
+  dark: {
+    title_color: "fff",
+    icon_color: "79ff97",
+    text_color: "9f9f9f",
+    bg_color: "151515",
+  },
+  radical: {
+    title_color: "fe428e",
+    icon_color: "f8d847",
+    text_color: "a9fef7",
+    bg_color: "141321",
+  },
+  merko: {
+    title_color: "abd200",
+    icon_color: "b7d364",
+    text_color: "68b587",
+    bg_color: "0a0f0b",
+  },
+  gruvbox: {
+    title_color: "fabd2f",
+    icon_color: "fe8019",
+    text_color: "8ec07c",
+    bg_color: "282828",
+  },
+  tokyonight: {
+    title_color: "70a5fd",
+    icon_color: "bf91f3",
+    text_color: "38bdae",
+    bg_color: "1a1b27",
+  },
+  onedark: {
+    title_color: "e4bf7a",
+    icon_color: "8eb573",
+    text_color: "df6d74",
+    bg_color: "282c34",
+  },
+  cobalt: {
+    title_color: "e683d9",
+    icon_color: "0480ef",
+    text_color: "75eeb2",
+    bg_color: "193549",
+  },
+  synthwave: {
+    title_color: "e2e9ec",
+    icon_color: "ef8539",
+    text_color: "e5289e",
+    bg_color: "2b213a",
+  },
+  highcontrast: {
+    title_color: "e7f216",
+    icon_color: "00ffff",
+    text_color: "fff",
+    bg_color: "000",
+  },
+  dracula: {
+    title_color: "ff6e96",
+    icon_color: "79dafa",
+    text_color: "f8f8f2",
+    bg_color: "282a36",
+  },
+};
+
+module.exports = themes;