Add development chain-spec file for minimal/parachain templates for Omni Node compatibility (#6529)

# Description

This PR adds development chain specs for the minimal and parachain
templates.
[#6334](https://github.com/paritytech/polkadot-sdk/issues/6334)


## Integration

This PR adds development chain specs for the minimal and para chain
template runtimes, ensuring synchronization with runtime code. It
updates zombienet-omni-node.toml, zombinet.toml files to include valid
chain spec paths, simplifying configuration for zombienet in the
parachain and minimal template.

## Review Notes

1. Overview of Changes:
- Added development chain specs for use in the minimal and parachain
template.
- Updated zombienet-omni-node.toml and zombinet.toml files in the
minimal and parachain templates to include paths to the new dev chain
specs.

2. Integration Guidance:
**NB: Follow the templates' READMEs from the polkadot-SDK master branch.
Please build the binaries and runtimes based on the polkadot-SDK master
branch.**
- Ensure you have set up your runtimes `parachain-template-runtime` and
`minimal-template-runtime`
- Ensure you have installed the nodes required ie
`parachain-template-node` and `minimal-template-node`
- Set up [Zombinet](https://paritytech.github.io/zombienet/intro.html)
- For running the parachains, you will need to install the polkadot
`cargo install --path polkadot` remember from the polkadot-SDK master
branch.
- Inside the template folders minimal or parachain, run the command to
start with `Zombienet with Omni Node`, `Zombienet with
minimal-template-node` or `Zombienet with parachain-template-node`

*Include your leftover TODOs, if any, here.*
* [ ] Test the syncing of chain specs with runtime's code.

---------

Signed-off-by: EleisonC <ckalule7@gmail.com>
Co-authored-by: Iulian Barbu <14218860+iulianbarbu@users.noreply.github.com>
Co-authored-by: Alexander Samusev <41779041+alvicsam@users.noreply.github.com>