chore: reorganize docs apps (#7228)

* reorganize docs apps

* add README

* fix directory

* add condition for old docs

docs-util/packages/utils/src/index.ts

@@ -1,4 +1,5 @@
 export * from "./get-type-children"
 export * from "./get-project-child"
 export * from "./get-type-str"
+export * from "./str-formatting"
 export * from "./str-utils"

docs-util/packages/utils/src/str-formatting.ts

@@ -0,0 +1,77 @@
+export function kebabToSnake(str: string): string {
+  return str.replaceAll("-", "_")
+}
+
+export function capitalize(str: string): string {
+  return `${str.charAt(0).toUpperCase()}${str.substring(1).toLowerCase()}`
+}
+
+export function wordsToCamel(str: string): string {
+  return `${str.charAt(0).toLowerCase()}${str
+    .substring(1)
+    .replaceAll(/\s([a-zA-Z])/g, (captured) => captured.toUpperCase())}`
+}
+
+export function camelToWords(str: string): string {
+  return str
+    .replaceAll(/([A-Z])/g, " $1")
+    .trim()
+    .toLowerCase()
+}
+
+export function camelToTitle(str: string): string {
+  return str
+    .replaceAll(/([A-Z])/g, " $1")
+    .split(" ")
+    .map((word) => capitalize(word))
+    .join(" ")
+    .trim()
+}
+
+export function snakeToWords(str: string): string {
+  return str.replaceAll("_", " ").toLowerCase()
+}
+
+export function kebabToTitle(str: string): string {
+  return str
+    .split("-")
+    .map((word) => capitalize(word))
+    .join(" ")
+}
+
+export function kebabToCamel(str: string): string {
+  return str
+    .split("-")
+    .map((word, index) => {
+      if (index === 0) {
+        return word
+      }
+      return `${word.charAt(0).toUpperCase()}${word.substring(1)}`
+    })
+    .join("")
+}
+
+export function kebabToPascal(str: string): string {
+  return str
+    .split("-")
+    .map((word) => capitalize(word))
+    .join("")
+}
+
+export function wordsToKebab(str: string): string {
+  return str
+    .split(" ")
+    .map((word) => word.toLowerCase())
+    .join("-")
+}
+
+export function wordsToPascal(str: string): string {
+  return str
+    .split(" ")
+    .map((word) => capitalize(word))
+    .join("")
+}
+
+export function pascalToCamel(str: string): string {
+  return `${str.charAt(0).toLowerCase()}${str.substring(1)}`
+}