Pdf to markdown (#2730)

# Description

Please provide a summary of the changes, including relevant motivation
and context.

Closes #(issue_number)

## Checklist

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have performed a self-review of my own code
- [ ] I have attached images of the change if it is UI based
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] If my code has heavily changed functionality I have updated
relevant docs on [Stirling-PDFs doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
- [ ] My changes generate no new warnings
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

---------

Co-authored-by: a <a>

build.gradle

@@ -5,7 +5,7 @@ plugins {
     id "org.springdoc.openapi-gradle-plugin" version "1.8.0"
     id "io.swagger.swaggerhub" version "1.3.2"
     id "edu.sc.seis.launch4j" version "3.0.6"
-    id "com.diffplug.spotless" version "7.0.1"
+    id "com.diffplug.spotless" version "7.0.2"
     id "com.github.jk1.dependency-license-report" version "2.9"
 	//id "nebula.lint" version "19.0.3"
 	id("org.panteleyev.jpackageplugin") version "1.6.0"
@@ -267,7 +267,7 @@ spotless {
         importOrder("java", "javax", "org", "com", "net", "io")
         toggleOffOn()
         trimTrailingWhitespace()
-        indentWithSpaces()
+        leadingTabsToSpaces()
         endWithNewline()
     }
 }
@@ -397,8 +397,8 @@ dependencies {
     // https://mvnrepository.com/artifact/com.bucket4j/bucket4j_jdk17
     implementation "com.bucket4j:bucket4j_jdk17-core:8.14.0"
     implementation "com.fathzer:javaluator:3.0.5"
-
-    implementation 'org.jsoup:jsoup:1.18.3'
+	
+	implementation 'com.vladsch.flexmark:flexmark-html2md-converter:0.64.8'
 	
     developmentOnly("org.springframework.boot:spring-boot-devtools:$springBootVersion")
     compileOnly "org.projectlombok:lombok:$lombokVersion"
@@ -454,4 +454,4 @@ task printMacVersion {
     doLast {
         println getMacVersion(project.version.toString())
     }
-}
+}