chore: add msrv for foyer, update bager in readme (#321)

Signed-off-by: MrCroxx <[email protected]>

README.md

@@ -1,6 +1,12 @@
 # foyer
 
-[![CI (main)](https://github.com/MrCroxx/foyer/actions/workflows/main.yml/badge.svg)](https://github.com/MrCroxx/foyer/actions/workflows/main.yml) [![License Checker](https://github.com/MrCroxx/foyer/actions/workflows/license_check.yml/badge.svg)](https://github.com/MrCroxx/foyer/actions/workflows/license_check.yml) [![codecov](https://codecov.io/github/MrCroxx/foyer/branch/main/graph/badge.svg?token=YO33YQCB70)](https://codecov.io/github/MrCroxx/foyer)
+![Crates.io Version](https://img.shields.io/crates/v/foyer)
+![Crates.io MSRV](https://img.shields.io/crates/msrv/foyer)
+![GitHub License](https://img.shields.io/github/license/mrcroxx/foyer)
+
+[![CI (main)](https://github.com/MrCroxx/foyer/actions/workflows/main.yml/badge.svg)](https://github.com/MrCroxx/foyer/actions/workflows/main.yml)
+[![License Checker](https://github.com/MrCroxx/foyer/actions/workflows/license_check.yml/badge.svg)](https://github.com/MrCroxx/foyer/actions/workflows/license_check.yml)
+[![codecov](https://codecov.io/github/MrCroxx/foyer/branch/main/graph/badge.svg?token=YO33YQCB70)](https://codecov.io/github/MrCroxx/foyer)
 
 *foyer* aims to be a user-friendly hybrid cache lib in Rust. 
 

foyer/Cargo.toml

@@ -8,6 +8,7 @@ license = "Apache-2.0"
 repository = "https://github.com/mrcroxx/foyer"
 homepage = "https://github.com/mrcroxx/foyer"
 readme = "../README.md"
+rust-version = "1.77.2"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [package.metadata.cargo-udeps.ignore]