Added book app features

[Nidhin567]

Added create book feature and list all books feature with ascending order update.

[greptile-apps]

Greptile Summary

This PR adds two plain-text feature description files for a book app submission, following the standard template used across this repository.

• create_book.txt describes the feature allowing an author to add a new book.
• list_all_books.txt describes the feature that displays all books a user has created, listed in ascending order.

Confidence Score: 5/5

Both files are plain-text feature descriptions with no executable code; safe to merge.

The two added files contain simple prose matching the expected template for this onboarding task. There is no logic, no runtime behavior, and no integration with other parts of the repository — nothing that could introduce a regression.

No files require special attention.

Important Files Changed

Filename	Overview
nidhinloganathan_book_app/add_books_feature/create_book.txt	Adds a one-line description of the create book feature; content matches the expected template for this task.
nidhinloganathan_book_app/add_books_feature/list_all_books.txt	Adds a two-sentence description of the list-all-books feature with ascending-order note; content aligns with the expected template.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Author] -->|Uses create book feature| B[Create Book]
    B --> C[New Book Added]
    D[User] -->|Uses list all books feature| E[List All Books]
    E --> F[Books sorted in Ascending Order]
    F --> G[Display Book List]

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
flowchart TD
    A[Author] -->|Uses create book feature| B[Create Book]
    B --> C[New Book Added]
    D[User] -->|Uses list all books feature| E[List All Books]
    E --> F[Books sorted in Ascending Order]
    F --> G[Display Book List]

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_{Reviews (1): Last reviewed commit: "Added list all books feature" | Re-trigger Greptile}