Add migration contract docs

docs/tools/flow-cli/migrate/_category_.json

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+{
+  "label": "Migrate Projects to 1.0",
+  "position": 11
+}

docs/tools/flow-cli/migrate/migrate-get-staged-code.md

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+---
+title: Get staged Cadence 1.0 Contract Code
+description: How to get staged Cadence 1.0 contract code from the command line
+sidebar_position: 5
+---
+
+Get the staged contract code from a contract thats been correctly staged.
+
+```shell
+flow migrate staged_code <contract_name>
+```
+
+## Example Usage
+
+```
+>
+flow migrate staged_code HelloWorld --network=previewnet
+
+Attempts to return the contract code of HelloWorld on the Previewnet network.
+
+```
+
+## Arguments
+
+### Contract Name
+
+- Name: `contract_name`
+- Valid Input: Existing contract name in `flow.json`.

docs/tools/flow-cli/migrate/migrate-is-staged.md

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+---
+title: Check if a contract is staged
+description: How to check if a contract has been properly staged from the command line
+sidebar_position: 4
+---
+
+Check to see if a contract has been staged from the Flow CLI
+
+```shell
+flow migrate is_staged <contract_name>
+```
+
+## Example Usage
+
+```
+>
+flow migrate is_staged HelloWorld --network=previewnet
+
+Attempts to confirm if the contract has been staged on the Previewnet network.
+
+```
+
+## Arguments
+
+### Contract Name
+
+- Name: `contract_name`
+- Valid Input: Existing contract name in `flow.json`.

docs/tools/flow-cli/migrate/migrate-list-staged-contracts.md

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+---
+title: List staged Cadence 1.0 Contracts
+description: How to list staged Cadence 1.0 Contracts from the command line
+sidebar_position: 3
+---
+
+Lists all Cadence 1.0 supported contracts that are staged from the Flow CLI.
+
+```shell
+flow migrate list-staged
+```
+
+## Example Usage
+
+```
+>
+flow migrate list-staged --network=previewnet
+
+Lists all staged contracts from the Previewnet network.
+
+```

docs/tools/flow-cli/migrate/migrate-stage-contract.md

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+---
+title: Staging a 1.0 Contract
+description: How to stage a Cadence 1.0 supported Contract from the command line
+sidebar_position: 1
+---
+
+Stage a Cadence 1.0 supported contract project using the Flow CLI.
+
+```shell
+flow migrate stage-contract <contract_name>
+```
+
+## Example Usage
+
+```
+>
+flow migrate stage-contract HelloWorld --network=previewnet
+
+Attempts to the stage the contract `HelloWorld` onto the Previewnet network.
+
+```
+
+## Arguments
+
+### Contract Name
+
+- Name: `contract_name`
+- Valid Input: Existing contract name in `flow.json`.

docs/tools/flow-cli/migrate/migrate-unstage-contract.md

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+---
+title: Unstaging a 1.0 Contract
+description: How to unstage a Cadence 1.0 supported Contract from the command line
+sidebar_position: 2
+---
+
+Unstage a Cadence 1.0 supported contract project using the Flow CLI.
+
+```shell
+flow migrate unstage-contract <contract_name>
+```
+
+## Example Usage
+
+```
+>
+flow migrate unstage-contract HelloWorld --network=previewnet
+
+Attempts to the unstage the contract `HelloWorld` from the Previewnet network.
+
+```
+
+## Arguments
+
+### Contract Name
+
+- Name: `contract_name`
+- Valid Input: Existing contract name in `flow.json`.