feat: add solutions for lc No.3846,3844

[yanglbme]

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[Copilot]

Pull request overview

This pull request adds solutions for two LeetCode problems (3844 and 3846) in multiple programming languages. The solutions implement efficient algorithms for calculating keyboard typing distance and finding almost-palindromic substrings.

Changes:

• Added solution for problem 3846 "Total Distance to Type a String Using One Finger" using Manhattan distance simulation
• Added solution for problem 3844 "Longest Almost-Palindromic Substring" using center expansion with character skipping
• Implemented solutions in Python, Java, C++, Go, and TypeScript for both problems

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
solution/3800-3899/3846.Total Distance to Type a String Using One Finger/Solution.py	Python implementation using precomputed keyboard positions with Manhattan distance
solution/3800-3899/3846.Total Distance to Type a String Using One Finger/Solution.java	Java implementation with static initialization of keyboard positions
solution/3800-3899/3846.Total Distance to Type a String Using One Finger/Solution.cpp	C++ implementation using lambda for static position map initialization
solution/3800-3899/3846.Total Distance to Type a String Using One Finger/Solution.go	Go implementation with init function for position map setup
solution/3800-3899/3846.Total Distance to Type a String Using One Finger/Solution.ts	TypeScript implementation with module-level position computation
solution/3800-3899/3846.Total Distance to Type a String Using One Finger/README.md	Chinese problem description and solution explanation
solution/3800-3899/3846.Total Distance to Type a String Using One Finger/README_EN.md	English problem description and solution explanation
solution/3800-3899/3844.Longest Almost-Palindromic Substring/Solution.py	Python implementation using center expansion with one-character skip
solution/3800-3899/3844.Longest Almost-Palindromic Substring/Solution.java	Java implementation with helper method for palindrome expansion
solution/3800-3899/3844.Longest Almost-Palindromic Substring/Solution.cpp	C++ implementation using lambda for palindrome expansion logic
solution/3800-3899/3844.Longest Almost-Palindromic Substring/Solution.go	Go implementation with closure for expansion function
solution/3800-3899/3844.Longest Almost-Palindromic Substring/Solution.ts	TypeScript implementation with arrow function for expansion
solution/3800-3899/3844.Longest Almost-Palindromic Substring/README.md	Chinese problem description and solution explanation
solution/3800-3899/3844.Longest Almost-Palindromic Substring/README_EN.md	English problem description and solution explanation

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