ci: generate pre-built binaries for darwin and arm64 (#2654)

Closes #2567

## Testing

Testing with binaries on [my
fork](https://github.com/rootulp/celestia-app/releases/tag/v1.0.0-rc5).

| os | arch | machine | works | notes |

|--------|----------------|---------------|-------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| darwin | arm64 | Rootul's MBP | ✅ | I had to circumvent [Apple can't
check app for malicious
software](https://support.apple.com/guide/mac-help/apple-cant-check-app-for-malicious-software-mchleab3a043/mac)
|
| darwin | amd64 (x86_64) | AWS | ✅ | |
| linux | arm64 | AWS | ✅ | |
| linux | amd64 (x86_64) | Digital Ocean | ✅ | |

.goreleaser.yaml

@@ -19,7 +19,9 @@ builds:
       - SDKPath={{ "github.com/cosmos/cosmos-sdk/version" }}
     goarch:
       - amd64
+      - arm64
     goos:
+      - darwin
       - linux
     tags:
       - ledger

README.md

@@ -51,7 +51,7 @@ node            |  |                               |  |
 If you'd rather not install from source, you can download a pre-built binary from the [releases](https://github.com/celestiaorg/celestia-app/releases) page.
 
 1. Navigate to the latest release on <https://github.com/celestiaorg/celestia-app/releases>.
-1. Download the binary for your platform (e.g. `celestia-app_Linux_x86_64.tar.gz`) from the **Assets** section.
+1. Download the binary for your platform (e.g. `celestia-app_Linux_x86_64.tar.gz`) from the **Assets** section. Tip: if you're not sure what platform you're on, you can run `uname -a` and look for the operating system (e.g. `Linux`, `Darwin`) and architecture (e.g. `x86_64`, `arm64`).
 1. Extract the archive
 
     ```shell
@@ -69,7 +69,7 @@ If you'd rather not install from source, you can download a pre-built binary fro
 If you use a pre-built binary, you may also want to verify the checksums and signatures.
 
 1. Navigate to the latest release on <https://github.com/celestiaorg/celestia-app/releases>.
-1. Download `checksums.txt`, `checksums.txt.sig`, and the binary for your platform (e.g. `celestia-app_Linux_x86_64.tar.gz`) from the **Assets** section.
+1. Download `checksums.txt`, `checksums.txt.sig`, and the binary for your platform (e.g. `celestia-app_Linux_x86_64.tar.gz`) from the **Assets** section. Tip: if you're not sure what platform you're on, you can run `uname -a` and look for the operating system (e.g. `Linux`, `Darwin`) and architecture (e.g. `x86_64`, `arm64`).
 1. Verify the checksums
 
     ```shell