fix: generate i18n_resource binary file for user on rewrite-package

[Aerex]

Context

Currently, i18n4go expects the user to generate a binary file of the translations file (using go-bindataa) prior to running the rewrite-package comand. This will lead to runtime errors for the updated source code if the generated go file (i18n_resources.go) is not present in the correct package.

Note: This issue ONLY occurs if the --init-code-snippet-filename is NOT provided

This PR will handle the binary file generation for the user by generating the file and storing in the correct package.

Callouts

• CF should not be a dependency when creating translations so I removed the expected cf folder when searching for localization file

Steps to Test

Setup

1. Create a project directory (eg. test)
2. Create a go.mod: go mod init example.com/test
3. Copy the examples/demo1.go and examples/excluded.json to the directory created in step 1
4. Create a new folder called i18n
5. Copy the [examples/excluded.json](https://github.com/maximilien/i18n4go/blob/fbc2394cd3e8877e4ea823bdb646a1018692a6c8/examples/demo1/excluded.json to the i18n folder in step 3
6. Run the extract-strings command to extract the strings and generated localization file (demo1.go.en.json):
   - i18n4go extract-strings -d ./ -r -o i18n/resources --exclude i18n/excluded.json
7. Merge the localization files with the command: i18n4go merge-strings -d i18n/resources -s en
8. Remove the generated localization file from step 5

Replicate Issue

1. Install or build i18n4go@master release
2. Run the command: i18n4go rewrite-package --verbose --directory ./ --i18n-strings-filename i18n/resources/en.all.json
3. Verify that the i18n_init.go file is generated
4. Open the i18n_init.go file and verify that the github.com/maximilien/i18n4go/i18n package fails to import
5. Open the package using your IDE to open the init.go file or open the file directly located ../../go/../pkg/mod/github.com/maximilien/[email protected]/i18n/init.go
6. Verify that the error: undefined: resources appears on line 117

Resolution

1. Delete the generated i18n_init.go file
2. Run the command: go mod edit -replace github.com/maximilien/i18n4go=/root/path/to/i18n4go/source/code
3. Run go mod tidy
4. Build the CLI from PR branch
5. Rerun the command using CLI from PR branch: i18n4go rewrite-package --verbose --directory ./ --i18n-strings-filename i18n/resources/en.all.json
6. Verify that i18n_resources.go file has been generated
7. Build the demo1.go: go build -o demo
8. Run the file ./demo
9. Verify that translation is printed correctly

Resolves: #127

[maximilien]

See comment

[maximilien]

LGTM