feat: support chart

[siyul-park]

A chart defines a node that combines multiple nodes to perform more complex operations. Charts are used to set up interactions between nodes.

id: 01908c74-8b22-7cbf-a475-6b6bc871b01b
namespace: default
name: sqlite
annotations:
  version: "v1.0.0"
specs:
  - kind: sql
    name: sql
    driver: sqlite3
    source: file::{{ .FILENAME }}:?cache=shared
ports:
  in:
    - name: sql
      port: in      
  out:
    - name: sql
      port: out
env:
  FILENAME:
      value: "{{ .filename }}"

• id: A unique identifier in UUID format. UUID V7 is recommended.
• namespace: Specifies the namespace to which the chart belongs, defaulting to default.
• name: Specifies the name of the chart, which must be unique within the same namespace. This name becomes the type of the node specification.
• annotations: Additional metadata for the chart, including user-defined key-value pairs such as description and version.
• specs: Defines the node specifications that make up the chart.
• ports: Defines how the chart's ports connect. It specifies how external ports should connect to internal nodes.
• env: Specifies the environment variables required by the chart. If id and name are empty, this is used as an argument for node specifications that utilize this chart.

[codecov]

Codecov Report

Attention: Patch coverage is 73.76861% with 229 lines in your changes missing coverage. Please review.

Project coverage is 76.11%. Comparing base (69fb695) to head (8306bd4).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
driver/mongo/pkg/chart/store.go	75.62%	25 Missing and 14 partials ⚠️
pkg/chart/chart.go	67.03%	22 Missing and 8 partials ⚠️
cmd/pkg/uniflow/main.go	0.00%	23 Missing ⚠️
pkg/chart/loader.go	64.00%	9 Missing and 9 partials ⚠️
pkg/chart/table.go	88.07%	9 Missing and 9 partials ⚠️
pkg/chart/linker.go	72.13%	11 Missing and 6 partials ⚠️
pkg/runtime/runtime.go	78.37%	8 Missing and 8 partials ⚠️
cmd/pkg/cli/start.go	46.15%	7 Missing and 7 partials ⚠️
pkg/chart/cluster.go	82.43%	10 Missing and 3 partials ⚠️
cmd/pkg/uniflowctl/main.go	0.00%	10 Missing ⚠️
... and 10 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #196      +/-   ##
==========================================
+ Coverage   76.05%   76.11%   +0.06%     
==========================================
  Files         124      133       +9     
  Lines        7496     8252     +756     
==========================================
+ Hits         5701     6281     +580     
- Misses       1236     1352     +116     
- Partials      559      619      +60     

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