feat: one-to-many relation helper

Allow one to specify that a field of a model is a foreign key.
It will generate a bunch of helper methods to query related entities
from one entity.

lib/sqlxgentools_misc/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "sqlxgentools_misc"
+description = "Various misc class to use in applications that use sqlxgentools"
+publish = true
+edition.workspace = true
+authors.workspace = true
+version.workspace = true
+license.workspace = true
+repository.workspace = true
+
+[dependencies]
+sqlx-core = { version = "=0.8.6" }
+sqlx-sqlite = { version = "=0.8.6", features = ["offline"] }
+fully_pub = "0.1"
+serde = { version = "1.0", features = ["derive"] }
+
+[lib]
+
+[lints.clippy]
+uninlined_format_args = "allow"