Add exact match search and within type search capabilities

[ricsam]

Changes proposed in this pull request:

• Add ability to search by exact type name using quotes, e.g. searching for "Asset" would give the Asset type only.

• Add ability to search within a type e.g. query.asset would give Query.allAssets Query._allAssetsMeta and Query.Asset

• Combining the two methods "Query.allAssets" would only give Query.allAssets

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