feat: add single module folder with kcl mod file with entries config

[Peefy]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

feat: add single module folder with kcl mod file with entries config

The module folder

$ tree me

me
├── kcl.mod
├── kcl.mod.lock
└── svc
    └── main.k

$ cat me/kcl.mod

[package]
name = "me"
edition = "0.0.1"
version = "0.0.1"


[profile]
entries = [
    "svc/main.k"
]

Run the command:

$ kcl run me

The_first_kcl_program: Hello World!

2. What is the scope of this PR (e.g. component or file name):

• pkg/options/run.go

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other