Documentation: add examples for constructing cap table, and performing standard operations

[ThatAlexPalmer]

On the docs site, provide examples for how common operations should be performed.

• [ ] creating an issuer (must exist before anything else happens) with initial shares authorized
• [ ] creating a stock class
• [ ] creating an issuance transaction for stakeholders 1-3
• [ ] creating an acceptance, cancellation, adjustment, re-purchase, and re-issuance transactions
• [ ] creating a stock transfer transaction

[linear[bot]]

TAP-291 Documentation: add examples for constructing cap table, and performing standard operations