[Feat] Implement Info class for GraphAr spark tool to construct and access the meta information of graph

[acezen]

Is your feature request related to a problem? Please describe.
Implement info classes for GraphAr spark tool. the Info include GraphInfo, VertexInfo and EdgeInfo and align to the classes of c++ SDK.

Describe the solution you'd like
Here is a proposal of the Info classes api:

class Property () {
  @BeanProperty var name: String = ""
  @BeanProperty var data_type: String = ""
  @BeanProperty var is_primary: Boolean = false
}

//methods of Property:
// -- getName: String
// -- getData_type: String
// -- getData_type_in_gar: GarType.Value
// -- getIs_primary: Boolean

class PropertyGroup () {
  @BeanProperty var prefix: String = ""
  @BeanProperty var file_type: String = ""
  @BeanProperty var properties = new java.util.ArrayList[Property]()
}

//methods of PropertyGroup:
// -- getPrefix: String
// -- getFile_type: String
// -- getFile_type_in_gar: FileType.Value
// -- getProperties:  ArrayList[Property]

class AdjList () {
  @BeanProperty var ordered: Boolean = false
  @BeanProperty var aligned_by: String = "src"
  @BeanProperty var prefix: String = ""
  @BeanProperty var file_type: String = ""
  @BeanProperty var property_groups = new java.util.ArrayList[PropertyGroup]()
}

//methods of AdjList:
// -- getOrdered: Boolean
// -- getAligned_by: String
// -- getPrefix: String
// -- getFile_type: String
// -- getFile_type_in_gar: FileType.Value
// -- getAdjList_type: String
// -- getAdjList_type_in_gar: AdjListType.Value
// -- getPropertyGroups: ArrayList[PropertyGroup]

class GraphInfo() {
  @BeanProperty var name: String = ""
  @BeanProperty var prefix: String = ""
  @BeanProperty var vertices = new java.util.ArrayList[String]()
  @BeanProperty var edges = new java.util.ArrayList[String]()
  @BeanProperty var version: String = ""
}

//methods of GraphInfo:
// -- getName: String
// -- getPrefix: String
// -- getVertices: ArrayList[String]
// -- getEdges: ArrayList[String]
// -- getVersion: String

class VertexInfo() {
  @BeanProperty var label: String = ""
  @BeanProperty var chunk_size: Long = 0
  @BeanProperty var prefix: String = ""
  @BeanProperty var property_groups = new java.util.ArrayList[PropertyGroup]()
  @BeanProperty var version: String = ""
}

//methods of VertexInfo:
// -- getLabel: String
// -- getChunk_size: Long
// -- getPrefix: String
// -- getProperty_groups: ArrayList[PropertyGroup]
// -- getVersion: String
// -- containPropertyGroup(property_group: PropertyGroup) : Boolean
// -- containProperty(property_name: String) : Boolean
// -- getPropertyGroup(property_name: String):PropertyGroup
// -- getPropertyType(property_name: String): GarType.Value
// -- isPrimaryKey(property_name: String): Boolean
// -- getPrimaryKey(): String
// -- isValidated(): Boolean
// -- getVerticesNumFilePath(): String
// -- getFilePath(property_group: PropertyGroup, chunk_index: Long): String
// -- getDirPath(property_group: PropertyGroup): String

class EdgeInfo() {
  @BeanProperty var src_label: String = ""
  @BeanProperty var edge_label: String = ""
  @BeanProperty var dst_label: String = ""
  @BeanProperty var chunk_size: Long = 0
  @BeanProperty var src_chunk_size: Long = 0
  @BeanProperty var dst_chunk_size: Long = 0
  @BeanProperty var directed: Boolean = false
  @BeanProperty var prefix: String = ""
  @BeanProperty var adj_lists = new java.util.ArrayList[AdjList]()
  @BeanProperty var version: String = ""
}

//methods of EdgeInfo:
// -- getSrc_label: String
// -- getEdge_label: String
// -- getDst_label: String
// -- getChunk_size: Long
// -- getSrc_chunk_size: Long
// -- getDst_chunk_size: Long
// -- getDirected: Boolean
// -- getPrefix: String
// -- getAdj_lists: ArrayList[AdjList]
// -- containAdjList(adj_list_type: AdjListType.Value): Boolean
// -- getAdjListPrefix(adj_list_type: AdjListType.Value): String
// -- getAdjListFileType(adj_list_type: AdjListType.Value): FileType.Value
// -- containPropertyGroup(property_group: PropertyGroup, adj_list_type: AdjListType.Value) : Boolean
// -- containProperty(property_name: String) : Boolean
// -- getPropertyGroups(adj_list_type: AdjListType.Value): java.util.ArrayList[PropertyGroup]
// -- getPropertyType(property_name: String): GarType.Value
// -- getPropertyGroup(property_name: String, adj_list_type: AdjListType.Value): PropertyGroup 
// -- isPrimaryKey(property_name: String): Boolean
// -- getPrimaryKey(): String
// -- isValidated(): Boolean
// -- getAdjListOffsetFilePath(chunk_index: Long, adj_list_type: AdjListType.Value) : String
// -- getAdjListOffsetDirPath(adj_list_type: AdjListType.Value) : String
// -- getAdjListFilePath(vertex_chunk_index: Long, chunk_index: Long, adj_list_type: AdjListType.Value) : String
// -- getAdjListDirPath(adj_list_type: AdjListType.Value) : String
// -- getPropertyFilePath(property_group: PropertyGroup, adj_list_type: AdjListType.Value, vertex_chunk_index: Long, chunk_index: Long): String
// -- getPropertyDirPath(property_group: PropertyGroup, adj_list_type: AdjListType.Value) : String
// -- getVersion: String

[acezen]

The issue has been solved by #45